Amina Meriem

Zingla

Chiraz Latiri

Yahya Slimani

Catherine Berrut

Wikipedia-based Semantic Approach for Tweet Contextualization

Keywords: Information Retrieval, Tweet Contextualization, Query Expansion, Explicit Semantic Analysis, Association Rules Mining

The tweet contextualization task aims at providing an automatic readable summary explaining a given tweet. As tweets are very short documents, bound to 140 characters, and not always written maintaining proper spellings, there is indeed a need for such a task. This article describes a semantic tweet expansion approach for the tweet contextualization task based on Wikipedia as an external knowledge source. This approach consists in two major phases, namely: the first is the generation of the candidate terms, from Wikipedia. While the second is the selection of the most-related terms. To achieve this latter, we propose a semantic relatedness measure based on the Explicit Semantic Analysis and association rules mining. The e↵ectiveness of our approach is proved through an experimental study conducted on the INEX 2014 collection. Our results have outperformed of the runs issued from INEX 2014.

Introduction

Twitter is a communication medium and a collaboration system that allows broadcasting short messages called tweets. In contrast to traditional blogs, the textual part of tweets is limited to 140 characters, submitted in real-time to report an idea, an actual interest, or an opinion [START_REF] Ben-Jabeur | Leveraging social relevance: Using social networks to enhance literature access and microblog search[END_REF]. The limit on the length of a tweet causes the well-known vocabulary mismatch problem, rendering the tweet hard to understand. Hence, to make it understandable by readers, it is necessary to find out its contexts. The aim of the INEX (Initiative for the Evaluation of XML retrieval) tweet contextualization task is to provide, automatically, from a recent dump of Wikipedia, a context that explains a given tweet, to help the reader understand this latter. To achieve this, two systems are combined, Information Retrieval System (IRS) based on the Indri 1 search engine and Automatic Summarization System (ASS) based on an e cient summarization algorithm created by TermWatch 2

. While the IRS extracts, from the Wikipedia document collection, a set of relevant documents for a given tweet, the ASS selects the most relevant passages from the extracted documents. These passages, not exceeding 500 words, define the context of the tweet. A baseline system composed of an IRS and an ASS has been made available online [START_REF] Bellot | Overview of INEX tweet contextualization 2013 track[END_REF] . In this paper, we define the tweet contextualization task as a query expansion issue. We are only interested in the textual part of the tweets, hence, we consider these latter as queries. The aim is to enhance the quality of a tweet for the baseline system, since it has a direct impact on the context quality. To accomplish this, we propose a semantic approach that consists of two phases, the first one is based on Wikipedia as an external knowledge source, and allows to generate candidate terms for a given tweet. The second one is based on Explicit Semantic Analysis [START_REF] Gabrilovich | Computing semantic relatedness using wikipediabased explicit semantic analysis[END_REF] and association rules mining [START_REF] Agrawal | Mining association rules between sets of items in large databases[END_REF], and calculates the semantic relatedness score between the tweet and the candidate terms. The relatedness score is used to rank the candidate terms in order to select the best ones for the tweet. We opted to use Wikipedia because it is currently the largest knowledge repository on the Web [START_REF] Gabrilovich | Wikipedia-based semantic interpretation for natural language processing[END_REF]. It is available in dozens of languages, with its English version being the largest increased every day with over 800 new articles. We claim that the use of this huge source is fruitful for the tweet contextualization task allowing a massive knowledge representation of a tweet. Our proposed approach for tweet contextualization o↵ers an interesting solution to obtain relevant context . This mainly relies on an accurate choice of the added terms to an initial tweet. Interestingly enough, tweet contextalization takes advantage of large text volumes provided by wikipedia articles by extracting semantic information. The remainder of this paper is organized as follows: In section 2, our work is put in the context of related works while section 3 introduces the formal explanation of our problem. Section 4 gives a detailed description of our tweet contextualization approach and section 5 presents our experimentations and results. Finally, section 6 is dedicated to the conclusion of this work and gives future works.

Related Works

Tweet Contextualization

Despite the fact that the idea to contextualize tweets is quite recent, there are several works in this context. Recently, authors of [START_REF] Ermakova | IRIT at INEX 2012: Tweet contextualization[END_REF] proposed a method based on the local Wikipedia dump, they used the Term Frequency-Inverse Document Frequency TF-IDF cosine similarity measure enriched by smoothing from local context, named entity recognition and Part-Of-Speech weighting presented at INEX 2011. They modified this method by adding bigram similarity, anaphora resolution, hashtag processing and sentence reordering. The sentence ordering task was modeled as a sequential ordering problem, where vertices corresponded to sentences and sentence time stamps represented sequential constraints. They proposed a greedy algorithm to solve the sequential ordering problem based on chronological constraints. While in [START_REF] Deveaud | Contextualisation automatique de tweets à partir de wikipédia[END_REF], authors used a method that allows to automatically contextualize tweets by using information coming from Wikipedia. They treated the problem of tweets contextualization as an automatic summarization task, where the text to resume is composed of Wikipedia articles that discuss the various pieces of information appearing in a tweet, one of the limitations of this approach is that the number of Wikipedia articles used to extract the candidate sentences is set manually. They explore the influence of various tweet-related articles retrieval methods as well as several features for sentence extraction. Whereas, in [START_REF] Deveaud | E↵ective tweet contextualization with hashtags performance prediction and multi-document summarization[END_REF], authors added a hashtag performance prediction component to the Wikipedia retrieval step. They used all available tweet features including web links which were not allowed by INEX's organisers. In [START_REF] Linhares | An automatic greedy summarization system at INEX 2013 tweet contextualization track[END_REF], authors used an automatic summarizer named REG. based on a greedy optimization algorithm to weigh the sentences. The summary is obtained by concatenating the relevant sentences weighed in the optimization step. In [START_REF] Morchid | Lia@inex2012 : Combinaison de thèmes latents pour la contextualisation de tweets[END_REF], authors used Latent Dirichlet Analysis (LDA) to obtain a representation of the tweet in a thematic space. This representation allows the finding of a set of latent topics covered by the tweet, this approach gives good results for the tweet contextualization task. Authors in [START_REF] Zingla | INEX2014: tweet contextualization using association rules between terms[END_REF] use the association rules between terms to extend the tweet, they project the terms of tweet on the rules' premises and add the conclusions to the original tweets. Finally, in [START_REF] Torres-Moreno | Three statistical summarizers at CLEF-INEX 2013 tweet contextualization track[END_REF] authors developed three statistical summarizer systems the first one called Cortex summarizer, that uses several sentence selection metrics and an optimal decision module to score sentences from a document source, the second one called Artex summarizer, that uses a simple inner product among the topic-vector and the pseudo-word vector and the third one called Reg summarizer which is a performant graph-based summarizer.

Query Expansion

Several works in the literature are proposed for the query expansion task, such as in [START_REF] Song | Integration of association rules and ontologies for semantic query expansion[END_REF] where the authors proposed a novel semantic query expansion technique that combines association rules with ontologies and Natural Language Processing techniques. This technique uses the explicit semantics as well as other linguistic properties of unstructured text corpus, it incorporates contextual properties of important terms discovered by association rules, and ontology entries are added to the query by disambiguating word senses. In [START_REF] Shekarpour | Keyword query expansion on linked data using linguistic and semantic features[END_REF], authors proposed to perform an initial retrieval of resources according to the original keyword query, the proposed process is divided into three main steps. In the first step, all words closely related to the original keyword are extracted based on two types of features: linguistic and semantic. In the second step, the introduced linguistic and semantic features are weighted using learning approaches. In the third step, they assign a relevance score to the set of the related words. Using this score we prune the related word set to achieve a balance between precision and recall. In [START_REF] Latiri | Query expansion using fuzzy association rules between terms[END_REF], authors addressed query expansion by considering the term-document relation as fuzzy binary relations. Their approach to extract fuzzy association rules is based on the closure of an extended fuzzy Galois connection, using di↵erent semantics of term membership degrees. Authors in [START_REF] Tan | Multimedia information modeling and retrieval (MRIM) /laboratoire d'informatique de grenoble (LIG) at chic2013[END_REF], propose a semantic approach that expands short queries by semantically related terms extracted from Wikipedia, they incorporate the expansion terms into the original query and adapt language models to evaluate the expanded queries. Query expansion techniques are also used for microblog retrieval, authors in [START_REF] Bandyopadhyay | Query expansion for microblog retrieval[END_REF], for example, used external corpora as a source for query expansion terms. Specifically, they used the Google Search API (GSA) to retrieve pages from the Web, and expanded the queries employing their titles. In [START_REF] Lau | Microblog retrieval using topical features and query expansion[END_REF], authors proposed a twitter retrieval framework that focuses on topical features, combined with query expansion using pseudo-relevance feedback (PRF) to improve microblogs retrieval results.

In this work, we propose to use a query expansion technique for the tweet contextualization task. Similar works have already proposed the use of the expansion technique for the target task ( [START_REF] Morchid | Lia@inex2012 : Combinaison de thèmes latents pour la contextualisation de tweets[END_REF] and [START_REF] Zingla | INEX2014: tweet contextualization using association rules between terms[END_REF]), but they su↵er from a major drawback. This drawback comes from the fact that these approaches did not include a term ranking phase. The absence of this ranking step resulted in noisy queries meaning that an extended query contained terms that did not relate to the original one. Taking these weaknesses into account, we propose to enhance our query expansion technique so that it will be composed of two phases, namely: the candidate terms generation, from Wikipedia, and the selection of the best ones according to their relatedness score. This selection step ensures that we will extend the query with related terms only. To calculate the semantic relatedness score we propose a new measure basing on ESA and association rules mining.

Basic Notions and Preliminaries

After introducing some notations, we state the formal definitions of the concepts used in the remainder of the paper. In this respect, we shall use in text mining field, the theoretical framework of Formal Concept Analysis (FCA) presented in [START_REF] Ganter | Formal concept analysis -mathematical foundations[END_REF]. First, we formalize the tweet contextualization task. So, the tweet contextualization task is concerned with contextualizing a set of n tweets = {tw 1 , . . . , tw n } using a collection of m Wikipedia articles ⌃ = {d 1 , . . . , d m } by providing a context c i for each tweet tw i 2 . For a given tweet tw i we retrieve a sub-set ⌃ p from ⌃ of the relevant articles, then we select the most relevant passages from the ⌃ p . These passages define the context c i .

Tweet Representation

We consider tweets as a short documents. We represent a tweet as bag of words, we do not use it directly in our proposed approach, but apply a preprocessing step first, wich removes all stop-words and twitter's specific stop-words such as (RT, @username, #). Formally, we have:

tw i = {wt j } (1)
where wt j : is a word in the tweet tw i ; i, j 2 N.

Tweet Context Representation

For a given tweet tw i , a context c i is a concatenation of passages from the articles in ⌃ p sub-set. a passages is composed of set of words. Formally, we have:

c i = {wc 1 . . . wc k } \k  500 (2)
where wc k : is a word in c i associated to the tweet tw i ; k 2 N.

Association Rules Mining

An association rule between terms R is an implication of the form R: T 1 ) T 2 , where T 1 and T 2 are subsets of I, where I := t 1 , ...., t l is a finite set of l distinct terms in the Wikipedia document collection and T 1 \ T 2 = ;. The termsets T 1 and T 2 are, respectively, called the premise and the conclusion of R. The rule R is said to be based on the termset T equal to T 1 [ T 2 . The support of a rule R: T 1 ) T 2 is then defined such that:

Supp R(T1,T2) = Supp(T ), (3)
while its confidence is computed such that:

Conf R(T1,T2) = Supp(T ) Supp(T 1 ) . ( 4
)
An association R is said to be valid if its confidence value, i.e., Conf R(T1,T2) , is greater than or equal to a user-defined threshold denoted minconf. This confidence threshold is used to exclude non valid rules.

The Proposed Approach for Tweets Contextualization

The tweet contextualization task is used to extract the context of a given tweet. The main goal is to enhance the quality of this context, i.e., ensuring that the context contains adequate correlating information with the tweets and avoiding the inclusion of non-similar information. To reach this goal, we propose a semantic approach based on Wikipedia as a Semantic Source (cf. Figure 1) that is divided into two major phases, the first one, namely the Tweet Expansion, consists in generating candidate terms for a given tweet. The second one, namely Term Ranking, consists in selecting the most related terms and adding them to the tweet. Tweet Expansion: It consists in exploring the Wikipedia articles related to the tweet. The nouns appearing in these articles' first sentences represent the set of candidate terms of the tweet. We note that an article's first sentences are called definitions. To achieve this, we use some heuristics: -Given a tweet tw i , first, we search for all articles that correspond to each word wt j 2 tw i in Wikipedia, using WikipediaMiner 4 [START_REF] Milne | An open-source toolkit for mining wikipedia[END_REF] for example, for Volvo we find the following articles: Volvo, Volvo Cars, Volvo Buses, Volvo Trucks, etc.

-We select the most referenced articles, these latter follow a predictable layout, which allows to provide short definitions of wt j by extracting the corresponding article' definition. For the previous example, we retrieve the following definition : "The Volvo Group is a Swedish multinational manufacturing company headquartered in Gothenburg." from the Volvo article that has the highest relatedness with the query.

-We annotate these definitions using TreeTagger which is a tool for annotating text with part-of-speech and lemma information. The choice of TreeTagger was based on the ability of this tool to recognize the nature (morphosyntactic category) of a word in its context. TreeTagger uses the recursive construction of decision trees with a probability calculation to estimate the part of speech of a word.

-We extract the nouns from these annotated definitions. These nouns form the set of candidate terms among which the terms that will be added to the tweet are selected.

Term Ranking: This phase consists in ranking the candidate terms according to their relatedness to the given tweet, and selecting the best ones to add to the initial tweet. To achieve this, we propose a new semantic relatedness measure (E SA-CONF) that combine the Wikipedia-based Explicit Semantic Analysis (ESA) measure and the association rules' confidence value. The following steps detail the ESA-CONF measure:

-Generating the association rules between terms from the Wikipedia articles, using an e cient algorithm, namely: CHARM 5 [START_REF] Zaki | An e cient algorithm for closed itemset mining[END_REF], and use their confidences (cf.Figure 2) to calculate the new score of relatedness such that:

ESA CON F twi,w = ( ↵ ESA twi,w + (1 ↵) Conf R(wt,w) if 9 R(wt, w); ESA twi,w , otherwise. (5)
Where

• ESA twi,w is the score of relatedness between the tweet tw i and the candidate term w calculated by ESA, we used the ESA implementation described in [START_REF] Gabrilovich | Computing semantic relatedness using wikipediabased explicit semantic analysis[END_REF]. • Conf R(wt,w) is the confidence of the rule R that express the association between the candidate term w and a word in tweet wt.

• ↵ is a weighting parameter 2 [0, 1].

calculating the ESA-CONF relatedness score between the tweet and each of the candidate terms.

selecting the most related terms according to their ESA-CONF scores and adding them to the initial tweet.

Finally, we transform the extended tweet to its Indri format, then, we send it to the baseline system to extract, from a provided Wikipedia corpus, a set of sentences representing the tweet context that does not exceed 500 words (this limit is established by the organizers).

Experiments, Results and Discussion

In this section, we detail the experimental study of applying our proposed approach, on the issue of tweets contextualization. Experimentations are done using WikipediaMiner, which is a toolkit developed for tapping the rich semantics encoded within Wikipedia, to select the related Wikipedia articles for a given tweet. This toolkit helps to integrate Wikipedia's knowledge into applications , by: -Providing simplified, object-oriented access to Wikipedia's structure and content.

-Measuring how terms and concepts in Wikipedia are connected to each other.

-Detecting and disambiguating Wikipedia topics when they are mentioned in documents.

We validated our approach over INEX 2014 [START_REF] Bellot | Overview of INEX tweet contextualization 2013 track[END_REF] collection which contains:

1. A collection of articles, that has been rebuilt based on a dump of the English Wikipedia from November 2012. It is composed of 3 902 346 articles, where all notes and bibliographic references that are di cult to handle are removed and only non-empty Wikipedia pages (pages having at least one section) are kept. 2. A collection of English tweets, composed of 240 tweets selected from the CLEF RepLab 2013. To focus on content analysis alone, urls are removed from the tweets.

We have evaluated our run according to the Informativeness metric, this latter is proposed by the INEX organizers, it aims at measuring how well the summary helps a user understand the tweets content. Therefore, for each tweet, each passage will be evaluated independently from the others, even in the same summary. the results are based on a thorough manual run on 1/5 of the 2014 topics using the baseline system. From this run two types of references were extracted, namely:

a list of relevant sentences per topic.

extraction of Noun Phrases from these sentences together with the corresponding Wikipedia entry.

The dissimilarity between a reference text and the proposed summary is given by:

Dis(T, S) = X t2T (P 1) ⇥ ✓ 1 min(log(P ), log(Q)) max(log(P ), log(Q)) ◆ (6)
where :

-P = f T (t) f T + 1. -Q = f S (t)
f S + 1. -T , a set of query terms present in reference summary and for each t 2 T .

-f T (t), the frequency of term t in reference summary.

-S, a set of query terms present in a submitted summary and for each t 2 S.

-f S (t), the frequency of term t in a submitted summary.

Organizers used three di↵erent distributions for the reference summaries in the 2014 tracks, namely:

-Unigrams made of single lemmas (after removing stop-words).

-Bigrams made of pairs of consecutive lemmas (in the same sentence).

-Bigrams with 2-gaps also made of pairs of consecutive lemmas but allowing the insertion between them of a maximum of two lemmas (Also referred to as skip distribution).

We have compared our runs with the following di↵erent runs submitted by INEX 2014 participants:

1. In Best run participants [START_REF] Zingla | INEX2014: tweet contextualization using association rules between terms[END_REF] used association rules between terms to extend the tweets. 2. In run-Cortex participants [START_REF] Torres-Moreno | Three statistical summarizers at CLEF-INEX 2013 tweet contextualization track[END_REF] used a statistical summarizer system called Cortex, which is based on the fusion process of several di↵erent sentence selection metrics. 3. In run-Artex participants [START_REF] Torres-Moreno | Three statistical summarizers at CLEF-INEX 2013 tweet contextualization track[END_REF] used a statistical summarizer system called Artex, which is based on the inner product of main topic and pseudo-words vectors.

We conducted two runs, namely:

-run-ESA: in this run, we used the ESA to calculate the relatedness between the tweet and the candidates terms. -run-ESA-CONF: in this run, we used our proposed measure to calculate the relatedness between the tweet and the candidates terms, As parameters, CHARM takes minsupp = 15 as the relative minimal support and minconf = 0.7 as the minimum confidence of the rules. While considering the Zipf distribution of the collection, the minimal threshold of the support value is experimentally set in order to spread trivial terms which occur in the most of the documents, and are then related to too many terms. We realized this run with the best parameter value ↵ = 0.5 obtained by experiments.

Tables 1 and 2 describe our obtained results where the lowest scores represent the best runs. This is justified by the fact that the results are diverging. To compare our runs (run-ESA, run-ESA-CONF) with the Best-Run, we perform the Student T-test. The results for Best-run and run-ESA seem to be very similar while the run run-ESA-CONF has achieved the best informativeness results.

The gray rows of the tables depict the results of our runs, where ' † †' represents the highly significant results and ' †' the ones similar to the Best-run (with pvalue <0.05).

Discussion

Our approach achieved promising informativeness results, this is due to the use of Wikipedia that augmented the tweet representation with massive amounts of world knowledge, and to the term ranking phase that reduced the noise in the extended tweets by eliminating the non related terms, and fine-grained the semantic representation of the tweets. The run run-ESA-CONF has achieved the best informativeness results. This can be explained by the use of association rules that led to the enforcement of the relatedness score between the candidate terms and the tweet, ensured that the extended tweets contain adequate correlating terms with the initial ones and helped avoid inclusion of non-similar terms in them as much as possible, so the extended tweets were, to some extent, clean.

At the end, we can say that our proposed approach is able to successfully reduce the tweet drift and allowed us to achieve the goal of this work.

Conclusion

In this paper, we proposed a semantic approach for the tweet contextualization task, based on Wikipedia as an external knowledge source. We conducted our experimentations on the INEX 2014 collection. The results we obtained through the di↵erent performed runs showed a significant improvement in the informativeness of the contexts. In our future work, we intend to extend our approach to take into account the tweets specificities (#,@,...). Furthermore, we mean to generalize our approach to contextualize normal (regular) queries by applying it on other data collections such as ChiC. This latter contains short queries that have no su cient information to express their semantic. Moreover, we plan to use other structured and semantically enriched data sources, such as DBPedia, UMBEL, Freebase, WordNet etc., as external sources.

Fig. 1 .

 1 Fig. 1. The proposed approach architecture

Fig. 2 .

 2 Fig. 2. An Example of Association Rules Extracted by CHARM

Table 1 .

 1 INEX Tweet Contextualization 2014 informativeness results based on sentences.

	Run	Unigrams	Bigrams	Bigrams with 2-gaps
	run-ESA-CONF	0.7613 † †	0.8629 † †	0.8638 † †
	run-ESA	0.7665 †	0.8661 †	0.8668 †
	Best-run	0.7632	0.8689	0.8702
	run-Cortex	0.8415	0.9696	0.9702
	run-Artex	0.8539	0.9700	0.9712

Table 2 .

 2 INEX Tweet Contextualization 2014 informativeness results based on noun phrases.

	Run	Unigrams	Bigrams	Bigrams with 2-gaps
	run-ESA-CONF	0.7839 † †	0.9229 † †	0.9434 † †
	run-ESA	0.7931 †	0.9269 †	0.9460 †
	Best-run	0.7903	0.9273	0.9461
	run-Cortex	0.8477	0.971	0.9751
	run-Artex	0.8593	0.9709	0.9752

http://www.lemurproject.org/indri.php

http ://data.termwatch.es

http://qa.termwatch.es/data

http://wikipedia-miner.cms.waikato.ac.nz/

it is an open source project downloaded at http://www.cs.rpi.edu/ zaki/wwwnew/pmwiki.php/Software/Software

Acknowledgments. This work is partially supported by the French-Tunisian project PHC-Utique RIMS-FD 14G 1404.


Olivier Renaut

Introduction

Political images of the soul consist of comparisons, analogies, metonymies, synecdoches and metaphors that compare the nature, parts, and functioning of the soul with those of a city. Plato uses these images in his dialogues to convey a clearer knowledge of the soul, of its mechanisms and of the way it should be ruled and ordered. It is difficult to draw up a strict typology of them, 1 but Plato employs political images in at least three ways, especially within the framework of the Republic's city-soul analogy. Firstly, Plato makes use of a strict comparison between the city and the soul: this is how the city-soul analogy is first introduced in book II of the Republic. Since justice is an attribute of both individuals and cities, the city constitutes a larger frame for elucidating what justice is. Provided that the concept of justice is taken to be identical both in the soul and in the city, the differences between civil justice and individual justice are expected, at first, to be differences only of size and clarity. However, on a second level, this initial comparison becomes an analogy. As justice 1 Two difficult issues arise here: first, can we draw a systematic typology of images in Plato's dialogues as we can in contemporary poetics, distinguishing comparison from analogy, metaphors, etc.? Second, as this volume shows, images can have different functions. On these two points, see Pender (2000) esp. 11-18 on metaphors and analogies in literal language.

proves to be an order between functions and classes, the analogy sees the city and the soul as structural entities, each having three functions or parts. Socrates establishes similarity and dissimilarity between relations and structures, not only between two realities. Moreover, to the analogical isomorphism is added the fact that individuals are presented as 'parts' of a bigger whole, viz. the city, making the relations between the two analogous entities more intricate, somehow obscure. Then, something which could not have at first been expected, the analogy becomes a way to explain how politics influences psychology and vice versa. Lastly, a third way of using political images of the soul is the metaphor. A political metaphor of the soul occurs when, for example, one compares the functioning of the soul to a theater or a public debate, or to a differentiated topological and political space, without explicating the analogous relation between the vehicle and the tenor. These metaphors may be consequences of a certain use of the city-soul analogy, suppressing the logical links that should keep the two entities distinct. In a way, we can consider them as a loose use of the city-soul analogy, playing with imaginary and vivid substitutions (a bragging mother standing for the appetitive function of the soul, a lion standing for the thumos). On the other hand, blurring the lines between vehicle and tenor may have a deeper significance: the metaphor could serve as a tool for producing real substitutions, for instance when civil law replaces absent reason in the soul of a citizen. In this case, the metaphor is not a consequence of the initial analogy but rather a normative tool that goes beyond the analogy and that has genuine effects on the organization of the soul's structure. The use of political images is, in fact, an ancient practice. 2 Many actions we moderns would rather qualify as psychological are drawn from a political model: deliberation or psychic conflict, for instance, may be interpreted as an internalized public process, for example in Homer and in tragedy. 3 But another origin of these comparisons is to be found in the well-known analogy between the city and the universe that we find, for 2 See Brock (2013) who gives a full account of various metaphors from Homer to the fourth century applied to politics.

3 See Gill (1995) for the idea that in Homer and in tragedy, deliberation is an internalized public debate among conflicting values.

example, in the Presocratics. 4 Finally, interactions between individuals and the political community they belong to were worthy of inquiry before Plato, found especially in the Hippocratic corpus and in Thucydides. 5 More precisely, the relationship between private and public spheres, and, all the more, the prevalence of what is in the common interest over what is of only individual interest, also give rise to analogies concerning events that affect both the community and its individuals (natural plagues, war and peace, wealth and poverty, inherited cultural characters and customs defining the individual, etc.) Relying on the obvious fact that political structures interact with psychological traits, as the city-soul analogy demonstrates at the risk of logical incoherence, Plato goes beyond mere isomorphism by using a linguistic tool: making individuals think of their soul as a little city (and reciprocally their city as an expansion of a well-ordered psychological structure) is presented as a key means to attaining the rule of reason. Political images of the soul are a center piece of a rhetorical strategy 7 for justifying the rule of law, especially to non-philosophers whose weakened rational capacity should be supported by non-rational representations and imagery.

See especially Demont (2009) for a precise overview of the problem. On Thucydides, see Morrison (1994). 6 On the interaction between public and private in ancient literature from Homer to Plato, see Macé (2012). 7 I borrow this expression from Blössner's (2007) fine analysis of the city-soul analogy. However, in what follows, I do not take this rhetorical strategy to be logically flawed. My intention is not to defend the validity of the city-soul analogy but to show how metaphors are actually part of a persuasive strategy to institute the rule of reason.

The scope of the city-soul analogy

The city-soul analogy has been variously interpreted, and it is useful, to begin with, to investigate what scope it has within the Republic.

According to the famous passage in book II (368c7-369a) which introduces the psycho-political framework, a strict comparison between a smaller entity (justice in the individual) and a larger frame (justice in the city) may help in discovering what justice is. Because 'justice' is a predicate that can be attributed both to the city and the individual, their comparison can reveal the essence of justice through the sameness of its idea in both cases. 8 A 'godsend' (hermaion) positing the unity of the form of justice and the sameness of its appearance and meaning makes this comparison possible -it implies that we think of the city as a large individual and of the individual as a small city, at least as far as the justice they manifest is concerned. As is well known, in book IV the strict comparison becomes an analogy, following a complex path, and risking, it has been argued, a loss of consistency in the initial program. The analogy transforms a mere heuristic tool into a rhetorical device in order to match the soul's structure and its political environment. The problem, according to B. Williams' famous analysis, is that this inference is grounded on a loose use of the initial comparison: the city being used as a model for individual justice and then as an effect of the latter. 'Parts and wholes' problems occur when we apply the analogy beyond its heuristic scope -and that is Plato's mistake; to the original comparison he adds the extra fact that individuals are 'parts' of the whole which is the city, in such a way that the analogy is potentially taken into an infinite regress, blurring the difference between the model and the image, the vehicle and the tenor. 9 What appears to be a logical problem has, on the contrary, been interpreted as a force of the analogy, even as its goal. If we take it that the tripartite psychology is grounded in the nature of the soul, i.e. has a descriptive value, whereas the city's organization is obviously prescriptive, then we must be of the opinion that the soul's structure should be the model for civic organization. But the reverse is also true: the individuals are indeed influenced by the character of the city and by institutions. In this case, the functioning of the city should help us to find the structure of the soul. This two-way causality implied and expressed through the analogy is precisely what J. Lear recognizes in the Republic. Soul and city are linked by way of 'internalization' and 'exteriorization' of both moral and civil values and virtues. 10 The truth remains that the logic of the argument appears somehow flawed, and a 'metaphorical' interpretation of psycho-political interaction should be preferred to a causal understanding of the argument. 11 In other words, the efficiency of the city-soul analogy is not grounded on valid relations between its elements but rather on its plausibility and its metaphorical efficiency. 12 Thus, political metaphors of the soul should be understood as a loose way of expressing a basic mutual influence between city and soul. Being intentionally loose ways of showing the link between city and individuals, they can be interpreted as shorter paths to mould and educate those who are not philosophers. 13 A shift from comparison and analogy to the metaphorical is clear in book IV, where Socrates seems to suggest that the character of the community derives from that of the individuals who compose or rule it.

Well, then, we are surely compelled to agree that each of us has within himself the same species and characteristics as the city? Where else would they come from? It would be ridiculous for anyone to think that spiritedness didn't come to be in cities from such individuals as the Thracians, Scythians, and others who live to the north of us who are held to possess spirit, or that the same isn't true of the love of learning, which is mostly associated with our part of the world, or of the love of money, which one might say is conspicuously displayed by the Phoenicians and Egyptians (Rep. 435e1-436a3, trans.

Grube & Reeve, slightly modified). 14 Plato may borrow this typology from the Hippocratic treatise Airs, waters and places ( § 12-16), where the physician shows that some types of 10 Lear (1992).

11 Ferrari (2005) 50-53

12 Blössner (2007) 358-360

13 Philosophers, especially those who do not owe anything to the city they belong to, may not be sensible to such metaphors, being aware that his soul is not molded by the city in which he grew up. That does not mean that he denies that there are causal interactions; but he won't credit the use of a metaphor of the "swarm" for example, as it is the case for educated guardians in 520b-c. character (èthè) are the result of the combination of nature (geographical characteristics, climate, etc.), of law, and of political constitution. 15 In this typology, it is not clear which comes first: the psychological and individual characteristics or the natural and political ones. For although the character of the city comes from its members, the city seems in return to promote and transmit psychological and individual character traits.

The problem is the meaning we are prepared to give to the expression 'species and characteristics' (eidè te kai èthè). The simplest interpretation is to understand eidè as 'appearance' or 'characteristics', that is, almost as a synonym for èthè. 16 It would mean that at least a majority of people in the city manifest the same characteristics that the city is famous for. 17 But eidè can also mean 'part' and 'function', or even 'class' when applied to the parts of the city (which are more usually called genè 18 ). In this case, which does not exclude the simpler interpretation but rather contains it, what Socrates is saying is that each member of a city possesses three psychological eidè whose structural order and development produces a character trait as well as, by extension, the reputation of a city. Scythians and Thracians are called 'spirited' metaphorically, for some of them (especially notorious warriors) present an ordering of their soul in which spiritedness (thumoeides) holds the reins over reason and desire. There is a transfer of a character trait held by some individual people over to the 15 On this point, see Renaut (2014) 261-264. 16 This is how Crombie interprets the term, as 'behaviour-propensities ', Crombie (1962) 344. In support of this view, the term spiritedness (thumoeides) seems to mean a character rather than a psychic function.

17 This is a reading supported later in book VIII, when Socrates declares: "And do you realize that of necessity there are as many forms of human character (ἀνθρώπων εἴδη) as there are of constitutions? Or do you think that constitutions are born 'from oak or rock' and not from the characters of the people who live in the cities governed by them, which tip the scales, so to speak, and drag the rest along with them?" (Rep. VIII, 544d6-e2) 18 We find the expression τριῶν γενῶν at 435b10, τριττὰ γένη φύσεων at 435b5 and b7. But the term εἶδος is also employed at 435b2: τὸ τοῦ πολεμικοῦ εἶδος in reference to the auxiliaries; likewise, εἶδος is implied in the expression τὸ τοῦ βουλευτικοῦ καὶ φύλακος for the guardians at 435b3. According to Cooper (1998) 120 n. 4, Plato anticipates the exposition of a functional psychology and I agree with this interpretation. For a thorough analysis of this passage, see Kühn (1994). Even if Kühn rejects Cooper's interpretation of the meaning of eidè (51 n.8), he agrees that this passage consists of a shift from a typology of characters to a functional psychology. whole value system of an entire people, and this contamination is indeed metaphorical (to be precise, it is a synecdoche, for we use some of its parts to refer to the city as a whole). But it would be an error not to see that this ordering of a soul does not, in return, depend upon cultural and political factors. Just as Macrocephali in the Hippocratic treatise shape the cranial form of their new-born members (A.W.P. 14), in this passage it is cities and communities that fashion the customs of their citizens and promote psychological traits. That is the reason why this psychological typology is included in a geographical one. Values and customs are fashioning what is actually valued in individuals' behavior. The city's institutions fully interact with the tripartite psychology, in a metaphorical way. In this passage, the analogy is clearly a means for Plato to make the two wholes, city and soul, communicate and interact, through internalization of common values, and exteriorization of these values through action and service as a role model. 19 The city, being composed of citizens having souls, should organize those citizens into groups based on their characters and dispositions; in return, this typology influences the structure of the citizen's souls depending on who should rule the city and give it its distinctive feature. Tripartite psychology pervades the city's organization, and vice versa, to such an extent that one could argue that Plato, by means of the analogy, politicizes the soul, and brings psychology into politics. 20 In other words, political metaphors should be seen as a normative attempt to shape the citizens' character and psyche in accordance with justice. Metaphors are not only rhetorical devices, they have real effects on the behavior of citizens. This linguistic mechanism is not in the least incidental. 21 Political metaphors and analogies are, firstly, an expression of the actual interweaving between psychology and politics, but they are also linguistic means for shaping our own perception of civic and psychic order. Part of the scope of the city-soul analogy is precisely to make this interweaving possible, through political images of the soul.

public discourses that rename values and virtues create a psychic stasis. On this point see Loraux (1986)

Political analogies and metaphors at work

Political vocabulary tends to pervade psychological descriptions, as when we think of our soul as a city, for example when Glaucon speaks of a "guardian [who] needs a guardian," 22 or when Socrates analyzes verbal expressions comparing struggles of the soul to an internal war. These expressions are more important than usually thought, especially when, as we will see later, they are used for non-philosophers.

In Republic IV, the popular expression 'to be stronger than oneself' (430e11-431b2) is taken as an example of a metaphor which helps in understanding psychological agency. 23 Yet isn't the expression 'to be stronger than oneself' ridiculous? The stronger self that does the controlling is the same as the weaker self that gets controlled, so that only one person is referred to in all such expressions. Of course. Nonetheless, the expression is apparently trying to indicate that, in the soul of that very person, there is a better part and a worse one and that, whenever the naturally better part is in control of the worse, this is expressed by saying that the person is selfcontrolled (enkrates) or master of himself. At any rate, one praises someone by calling him self-controlled. But when, on the other hand, the smaller and better part is overpowered by the mass of the worse, because of bad upbringing or bad company, this is called being self-defeated or licentious and is a reproach. (Rep. IV, 430e11-431b2. trans. Grube & Reeve, slightly modified). 24 This simple expression, 'to be stronger than oneself', is a 'clue' (430e9) in language to reveal what the virtue of moderation is. Moderation, we are told, is a kind of enkrateia, i.e. the ability for reason to take over desires. But obviously, this idea of self-control is a consequence of an analogical transfer. To be 'stronger than oneself' presupposes an internalization of the opposition of at least two agents, one stronger, the other weaker. 25 The metaphor reveals, then, a difference between at least two 'parts' or even 'selves'; a better and a worse. This way of defining personality and agency occurs just before Socrates explains how the agent's soul consists of three 'functions', each pursuing a proper object and opposing the others with its force and motivation: the rational part (logistikon) is a calculative or rational function, the spirited part (thumos) is a function that enables things to be valued, thus committing the individual to a set of values, while the appetitive part (epithumètikon) refers to desires.

It should be emphasized that this metaphor has, for Socrates, a clear political meaning. 26 First, the order of one's soul is compared with a political power of one part of the city over another part, establishing a hierarchical relation between the two. Secondly, the 'self' in this expression is presented altogether as part of a larger community that potentially praises or blames it, the better part being associated, if not identified, with the few better 'men' in the city and, reciprocally, the worse part being explicitly associated with 'bad company'. Thirdly, as the mention of 'upbringing' suggests, moderation understood as enkrateia may be an effect of the direct influence of politics over the nonphilosophers that constitute the majority of the city. The metaphor, whose vehicle is political and tenor psychological, is then reapplied to the city, reversing the roles of that which is compared and that which is being compared to. We may call a city 'stronger than itself' when the 'wisdom and desires' of the better men (where true moderation lies, for they have knowledge) control the desires of "children, women, household slaves, and in those of the inferior majority who are called free" (431b9-c3). This explanation is partly based on the city-soul analogy, for wisdom is identified with the guardians, whereas vile desire 25 On enkrateia as a model for defining moderation in the Republic, see Dorion (2007). Dorion shows how enkrateia is dismissed in the first dialogues like the Charmides, and partially restored in the middle and late dialogues. This rehabilitation has two important consequences: first, enkrateia supposes at least a bi-partition of the soul and, second, enkrateia is understood not as a force distinct from reason but rather the action of reason, together with thumos, upon desires and pleasures. Dorion stresses the necessity of re-elaborating metaphors (kingship and slavery) to account for this new definition of moderation (see esp. pp. 132-133). It is not by accident that these metaphors are political, as we shall see in the Laws. 26 As Morgan (2003) showed, comparing this passage with Gorgias 491c6-e1, pp. 194-198. is represented by another category of people. But we are also clearly beyond the analogy here, for guardians are not just the 'reason' of the city, but also have good and educated desires (431c5-7) which they can communicate to those they rule, at least through laws, prescriptions and bans, praise and blame. And this is the true sense of moderation in the city: it is not enough that base citizens be ruled by better men, they also have to agree on who should rule the city and, consequently, their own desire (431d9-e2). A city is then moderate when all its members agree on the hierarchical relationship between the classes, desires and pleasures contained by the effect of wisdom, in the case of the guardians, and by true opinion, in the case of the rest of the city.

In conclusion to this passage (430e11-431b2), we may argue that two senses of moderation are set out. First, a popular one, that can be applied to individuals, when one obeys his reason or true opinion in order to contain his desires and pleasures. This popular definition is grounded in the political metaphor of the king (reason) and the slaves (desires).

Second, a political one, which is applied to a city, when their members are supposed to obey their good rulers with respect to what is desirable and what must not be desired. But this interpretation would miss the point. It may not be logically necessary for a 'moderate' city to rely on the true moderation of its members, for Socrates accepts that the individuals are mostly not moderate. But would a political agreement or consensus on who should rule the city be sufficient? It appears that it is not the case. Such an agreement presupposes a community regarding affections, pleasures and pains, making the city united among its members (Rep. V, 462a9-e3) so that "the city is most like a single person" (462c10). Hence, we can at least affirm that the metaphor of 'self-control' applied to the city conveys a derived meaning of moderation that enjoins the citizens to show a transferred moderation or self-mastery. 27 This first political metaphor was meant to reveal the definition of moderation applied to the city. Oddly, Socrates used the psychological model of 'self-control' to define it more precisely, and we have seen that the initial vehicle of the metaphor was political, to explain, in a more vivid and imaginary way, what moderation in an individual soul was. The function of the political metaphor is quite clear here: it is based on the logically false but efficacious identification between elements which are only analogous. The metaphor, to put it briefly, altogether expresses and creates an interweaving between city and individuals, the latter being 'parts' of the former. The same metaphorical process is observed when Socrates defines moderation in the individual soul. The provisional definition of moderation as 'self-control' is now deepened thanks to another political metaphor.

And isn't he moderate because of the friendly and harmonious relations between these same parts, namely, when the ruler and the ruled believe in common that the rational part should rule and don't engage in civil war against it?

Moderation is surely nothing other than that, both in the city and in the individual.

(Rep. IV, 442c10-d3) 28 To define moderation in individuals, Socrates resorts to the political metaphor of civic friendship (philia), concord (symphonia) and agreement on who should be in command (homodoxia). In contrast, those who are not moderate are compared to individuals involved in a civil war (stasis), which is also the image Socrates later uses to define injustice. 29 Conflicting judgments of value are compared with factions; to bring stasis to an end, the better men should rule the worse part of the city, and the whole soul should be ruled by reason. This metaphor is a perfect mirror of the first one, dealing with political moderation: to define individual moderation, Socrates takes a political metaphor which is already steeped in psychology.

What can we infer from this use of the psycho-political metaphor to define both moderation in the city and in the individual? One solution would be to understand that it is meant to be a linguistic way of defining neither the city's nor the individual's virtue alone, but rather the citizen's, i.e. the individual in the city, or the city as composed by individuals. The legislator uses the metaphor as a rhetorical means to enjoin the citizens 28 Τί δέ; σώφρονα οὐ τῇ φιλίᾳ καὶ συμφωνίᾳ τῇ αὐτῶν τούτων, ὅταν τό τε ἄρχον καὶ τὼ ἀρχομένω τὸ λογιστικὸν ὁμοδοξῶσι δεῖν ἄρχειν καὶ μὴ στασιάζωσιν αὐτῷ; Σωφροσύνη γοῦν, ἦ δ' ὅς, οὐκ ἄλλο τί ἐστιν ἢ τοῦτο, πόλεώς τε καὶ ἰδιώτου. 29 Rep. IV, 444b1-8: "Surely, it must be a kind of civil war between the three parts, a meddling and doing of another's work, a rebellion by some part against the whole soul in order to rule it inappropriately. The rebellious part is by nature suited to be a slave, while the other part is not a slave but belongs to the ruling class. We'll say something like that, I suppose, and that the turmoil and straying of these parts are injustice, licentiousness, cowardice, ignorance, and, in a word, the whole of vice." On this blurring of the lines between justice and moderation, see Larson (1951) not only to unify their souls but also to obey their rulers and to feel like a genuine part of the city. Each individual becomes, in a way, his own guardian, calling for civic and collective feelings of strategy, courage and obedience, whenever a psychological conflict occurs. 30 At the end of book IV, Socrates puts his definition of justice in the individual to the test of 'ordinary situations':

For example, if we had to come to an agreement about whether someone similar in nature and training to our city had embezzled a deposit of gold or silver that he had accepted, who do you think would consider him to have done it rather than someone who isn't like him? No one.

And would he have anything to do with temple robberies, thefts, betrayals of friends in private life or of cities in public life? No, nothing.

And he'd be in no way untrustworthy in keeping an oath or other agreement. How could he be? And adultery, disrespect for parents, and neglect of the gods would be more in keeping with every other kind of character than his. With every one. And isn't the cause of all this that every part within him does its own work, whether it's ruling or being ruled?

Yes, that and nothing else.

Then, are you still looking for justice to be something other than this power, the one that produces men and cities of the sort we've described?

No, I certainly am not.

Then the dream we had has been completely fulfilled-our suspicion that, with the help of some god, we had hit upon the origin and pattern of justice right at the beginning in founding our city. (Rep. IV, 442e4-443c2) 31

30 See for example the way Leontius resorts to public opinion as a law to resolve his psychic conflict, (Rep. IV, 439e6-440a7). It is not a coincidence that we find the term πολεμεῖν (440a5-6) to describe the way anger struggles with desires. The sensitivity of the honest man's thumos to justice, when he is victim to an injustice, requires an opinion of what is just, and it is for this that he will 'fight' (συμμαχεῖ τῷ δοκοῦντι δικαίῳ).

(Rep. IV, 440c8) On these passages, see Renaut (2014) 13

All these ordinary situations are precise cases where law, whether codified or not, is at stake. The kind of justice Socrates is looking for by means of the analogy is some kind of civic virtue, a virtue anyone can practice in a city, and not justice in the individual, regardless of social and political conditions. The city's laws condition even 'private life', through a true opinion which relates to justice in a city. In all these cases, law seems to be the horizon, indeed the solution, whereby an individual can attain virtue. 32 The 'help of some god' Socrates refers to is the 'godsend' seen in book II, which guaranteed the identity of the appearance of justice in the city and in the individual. True, this 'godsend' did not imply, at first, a structural identity between city and soul, leading to the analogy, but the analogy is the source of political metaphors which interweave psychology and politics. These political metaphors are both the expression of the way in which law stands for reason in the citizen's soul, as well as a means to persuade citizens that they should obey civic law. The necessity to refer to laws as the right opinion, and the persuasive dimension of these metaphors makes it clear that they are not intended for philosophers whose virtue is not mediated by any other opinion, but is the result of knowledge itself. Political metaphors are used to give "demotic virtues", and not philosophical virtues, a stronger basis, using law as a substitute for reason.

When law stands for reason

Political images of the soul do not only occur within the framework of the city-soul analogy in the Republic; in the Timaeus and in the Laws we find several comparisons and metaphors between individual characters, the structure and parts of the soul, and the organization of a city-state in all respects (its geography, military constructions, political institutions, etc.). It may be dangerous to compare several dialogues in their respective use of the political images of the soul, for each dialogue pursues a distinct οἰκίζειν κατὰ θεόν τινα εἰς ἀρχήν τε καὶ τύπον τινὰ τῆς δικαιοσύνης κινδυνεύομεν ἐμβεβηκέναι.

32 Kamtekar (1998) has shown how we might accept that the virtues of the auxiliaries are 'imperfect' in the sense that they only rely on true opinion and are lacking 'counterfactual reliability'. Whereas Kamtekar stresses the epistemic grounds of this 'imperfect virtue', I wish to stress the importance of politics in the constitution of these true opinions. Bobonich (2002) 42-45 remains unclear on the possibility for other classes to possess an imperfect form of virtue, but the possibility is open in the Laws (288-292).

dialectical path; but it shows, in spite of everything, how Plato wished to 'politicize' his psychology, i.e. as an instrument to account for the behavior of individuals in flawed institutions and a tool to promote an adequate education for citizens, even more so in the case of nonphilosophers.

In book I of the Laws, the Athenian explicitly identifies, or rather substitutes, law and reason. What was only analogous in the Republic is, in the Laws, interchangeable. 33 Comparing the human soul to a puppet in book I, the Athenian puts forth a political metaphor:

-But that he possesses within himself a pair of witless and mutually antagonistic advisers, which we call pleasure and pain? -That is so.

-In addition to these two, he has opinions about the future, whose general name is 'expectations'. Specifically, the anticipation of pain is called 'fear', and the anticipation of the opposite is called 'confidence'. Over and against all these we have 'calculation', by which we judge the relative merits of pleasure and pain, and when this is expressed as a public decision of a state, it receives the title 'law'. (Leg. I, 644c6-d3) 34 Psychic conflict receives a political treatment: pleasure and pain are 'advisers' (sumboulos), whereas public law (nomos) stands for calculation (logismos), when it is publicly stated. This law can either be knowledge or true opinion; it aims at helping the individual to judge and act virtuously when reason is eventually lacking or is too weak. The metaphor gives way to a mere substitution, insofar as prescriptions and interdictions are supposed to act directly on human affections, by providing the force that reason precisely lacks:

This cord, which is golden and holy, transmits the power of 'calculation', a power which in a state is called the public law (…) The force exerted by law is excellent, and one should always co-operate with it, because although 'calculation' is a noble thing, it is gentle, not violent, and its efforts need assistants, so that the gold in us may prevail over the other substances. (Leg. I, 644e6-645b1) 35

33 Saunders (1962) has shown that even if the city-soul analogy is not explicitly stated in the Laws, it is not abandoned, and many parallels can be drawn between psychic dispositions and classes in the city of Magnesia. See esp. p. 42 sq.

34

{ΑΘ.} Δύο δὲ κεκτημένον ἐν αὑτῷ συμβούλω ἐναντίω τε καὶ ἄφρονε, ὣ προσαγορεύομεν ἡδονὴν καὶ λύπην; {ΚΛ.} Ἔστι ταῦτα. {ΑΘ.} Πρὸς δὲ τούτοιν ἀμφοῖν αὖ δόξας μελλόντων, οἷν κοινὸν μὲν ὄνομα ἐλπίς, ἴδιον δέ, φόβος μὲν ἡ πρὸ λύπης ἐλπίς, θάρρος δὲ ἡ πρὸ τοῦ ἐναντίου• ἐπὶ δὲ πᾶσι τούτοις λογισμὸς ὅτι ποτ' αὐτῶν ἄμεινον ἢ χεῖρον, ὃς γενόμενος δόγμα πόλεως κοινὸν νόμος ἐπωνόμασται. Unsurprisingly, the Athenian makes this political metaphor of the soul a possible explanation to the expression we have already seen in the Republic, 'to be better than oneself': "the meaning of the terms 'selfsuperior' and 'self-inferior' will somehow become clearer, and the duties of state and individual will be better appreciated" (Leg. I, 645b2-5). The self-superior individual is the one whose soul is governed by reason and/or by law. Of course, in the latter case, reasoning is heteronomous and comes from an internalized norm which laws express. If his behavior is not unconditionally virtuous, because he lacks knowledge, he presents sufficiently virtuous dispositions. Law pervades every civic activity, from educational models in preliminary training, to games, rituals, institutions like syssitia, choral practices, etc. It helps reason to subdue human affections by making them compatible with true opinion. 36 I now turn to the Timaeus. From 69c, the physician explains, by use of political metaphors 37 , how the moral parts of the soul are located in the body by daemons.

In the face of these disturbances they scrupled to stain the divine soul only to the extent that this was absolutely necessary, and so they provided a home for the mortal soul in another place in the body, away from the other, once they had built an isthmus as boundary between the head and the chest by situating a neck between them to keep them apart. Inside the chest, then, and in what is called the trunk they proceeded to enclose the mortal type of soul. And since one part of the mortal soul was naturally superior to the other, they built the hollow of the trunk in sections, dividing them the way that women's quarters are divided from men's. They situated the midriff between the sections to serve as a partition. (Tim. 69c5-70a2, trad. D. Zeyl, slightly modified) 38

In the first instance, the vocabulary Plato uses to locate the soul in the body is much more topological and political in nature: prosoikodomeô, katoikizô, diokodomeô are words that convey not spatial location but rather a political image of the administration of an oikos, an estate, whether public or private. The metaphor of the 'isthmus' and the 'boundary' (horon) also conveys a political image of the body. The geopolitical separation is complemented by a domestic, though political, function: the separation of men and women. Timaeus then explains why the thumos should be close to the head, introducing a new metaphor:

Now the part of the mortal soul that exhibits manliness and spirit, the ambitious part, they settled nearer the head, between the midriff and the neck, so that it might listen to reason and together with it restrain by force the part consisting of appetites, should the latter at any time refuse outright to obey the dictates of reason coming down from the citadel. (Tim. 70a2-7) 39 An urbanistic metaphor, which refers to the political organization of the city in the Republic, compares reason with law, 40 with the ruling class occupying the Acropolis while the auxiliaries are based near the city walls, protecting the city from the outside by force, and from the inside by law and public order. This hierarchical metaphor is not exclusive with another urbanistic metaphor in the Laws, which explains why thumos is intermediary:

We can see that it is not universally true that one district extends right up to the boundary of another. In some cases there is a no man's land in between, which will extend so as to touch either boundary and occupy an intermediate position between the two. This, we said, was true of an act done in anger: it falls somewhere between voluntary and involuntary. (Leg. IX, 878b4-8, trans. T.J. Saunders) 41

This passage concludes a long discussion on the way a judge should apply penal categories in considering cases involving murder or injury, being aware that these categories are too broad for a crime which is, strictly speaking, never committed willingly. 42 What is translated as a 'noman-land' (methorion) is naturally associated with intermediary (metaxu). This metaphor is not the least bit accidental: thumos appears 39 τὸ μετέχον οὖν τῆς ψυχῆς ἀνδρείας καὶ θυμοῦ, φιλόνικον ὄν, κατῴκισαν ἐγγυτέρω τῆς κεφαλῆς μεταξὺ τῶν φρενῶν τε καὶ αὐχένος, ἵνα τοῦ λόγου κατήκοον ὂν κοινῇ μετ' ἐκείνου βίᾳ τὸ τῶν ἐπιθυμιῶν κατέχοι γένος, ὁπότ' ἐκ τῆς ἀκροπόλεως τῷ τ' ἐπιτάγματι καὶ λόγῳ μηδαμῇ πείθεσθαι ἑκὸν ἐθέλοι. 40 Taylor (1928) 500, claims that Timaeus is referring to the urbanistic organization of Syracusa.

41 Ἔστιν δὲ οὐ πάντων, ὡς ἔοικε, τῶν ὄντων ὅρος ὅρῳ προσμειγνύς, ἀλλ' οἷς ἔστιν μεθόριον, τοῦτο ἐν μέσῳ ὅρων πρότερον ἑκατέρῳ προσβάλλον γίγνοιτ' ἂν ἀμφοῖν μεταξύ• καὶ δὴ καὶ τῶν ἀκουσίων τε καὶ ἑκουσίων τὸ θυμῷ γιγνόμενον ἔφαμεν εἶναι τοιοῦτον.

42 On this problem, see Woozley (1972), esp. 312-313, as well as the reply in Saunders (1973).

to be an undefined 'zone' between reason and law on the one hand, and desire and civic disorder on the other; its command or its lack of control in a given individual is the criterion the judges must take into account in deciding whether the criminal should be accepted as a member of the city or not. 43 In the Timaeus and in the Laws, the metaphor aims at shaping a political organized body and soul, continuing the city-soul analogy of the Republic in other ways. 44 The parts of the soul are like the spaces politics invests in, just as it invests in the body. The plasticity of the metaphors allows the legislator some room to educate these souls, to divide them into 'parts' or 'places', with a view to mirroring the order of his city. This is why, as a potential cause of the psychic diseases discussed at the end of the Timaeus, political institutions are mentioned as at least as important as physical causes (87a7-b9). 45 A soul, then, is always a political soul, insofar as it is tied to a political institution in which the soul acts and suffers.

Conclusion

Political images of the soul can be read as loose uses of analogies and comparisons whose logical links are concealed. But the fact that they are rhetorical devices does not mean that they have no effect, nor that they pursue no philosophical aim. On the contrary, these political images, and especially political metaphors of the soul, which try to substitute the power of law for an inconstant reason, could be read as a starting point for what the city-soul analogy tries to analyze. If the city-soul analogy fails in explaining the valid relations of inclusion between individuals and the city they belong to, then the political metaphors are, indeed, powerful 43 I discuss this passage in Renaut (2014) 318-322. 44 Whatever constitution it may have, the city functions as a model for the body, even if the physician claims that the city should be organized on the model of the body, as Desclos (1996) 154 rightly reminds the reader: "La Cité doit être comme un corps, nous disent le Timée et le Critias, en oubliant de préciser que l'on a d'abord organisé le corps comme une cité, ce que confirme la configuration narrative de nos deux dialogues : le discours de Timée est comme enclavé entre les deux récits de Critias, leur ensemble étant de surcroît explicitement présenté comme la suite de la constructiondans et par la République -d'une Cité idéale." 45 This is why the scope of the tripartite soul remains, in the Timaeus, moral and political rather than physiological. See Stalley (1996) on the concept of penology as a « moralised medecine », and Macé (2010) on a platonic understanding of social psychology of the psychic diseases.

devices for making the rule of law a reality in the city. Transferring the power of reason to the power of law is a task that political metaphors of the soul seem to fulfill for an audience of citizens that are not philosophers.

  8

27

  Jeon (2014) convincingly argues for the necessity of there being a whole-part causal causation at work in the Republic, especially for the class of the producers, where political values are closely connected with personal values and goals. See esp. p.195- 202.

  6 These three heritages combined offer many bases for Plato to make political images of the soul understandable and efficacious for his audience. But what then, exactly, is the 'power' of such metaphors, if they have

any? What does Plato intend in his use of political vocabulary for describing a psychological state or functioning? In what follows, I argue that his main purpose is to produce, by way of metaphors, a new politicized psychology. Political metaphors are intended to justify how reason in individuals must be paired with public law in order to create virtue among citizens.

  According toPender (2000) 206-213, political images of the soul in the Republic are 'cognitively irreducible and so become an integral, irreplaceable part of Plato's theory' (206). But, as we shall see, the goal of these images is not only illustrative but normative.24 Οὐκοῦν τὸ μὲν κρείττω αὑτοῦ γελοῖον; ὁ γὰρ ἑαυτοῦ κρείττων καὶ ἥττων δήπου ἂν αὑτοῦ εἴη καὶ ὁ ἥττων κρείττων• ὁ αὐτὸς γὰρ ἐν ἅπασιν τούτοις προσαγορεύεται. Τί δ' οὔ; Ἀλλ', ἦν δ' ἐγώ, φαίνεταί μοι βούλεσθαι λέγειν οὗτος ὁ λόγος ὥς τι ἐν αὐτῷ τῷ ἀνθρώπῳ περὶ τὴν ψυχὴν τὸ μὲν βέλτιον ἔνι, τὸ δὲ χεῖρον, καὶ ὅταν μὲν τὸ βέλτιον φύσει τοῦ χείρονος ἐγκρατὲς ᾖ, τοῦτο λέγειν τὸ κρείττω αὑτοῦ -ἐπαινεῖ γοῦν -ὅταν δὲ ὑπὸ τροφῆς κακῆς ἤ τινος ὁμιλίας κρατηθῇ ὑπὸ πλήθους τοῦ χείρονος σμικρότερον τὸ βέλτιον ὄν, τοῦτο δὲ ὡς ἐν ὀνείδει ψέγειν τε καὶ καλεῖν ἥττω ἑαυτοῦ καὶ ἀκόλαστον τὸν οὕτω διακείμενον.

22

Rep. III, 403e. See also

Rep. VIII, 549b4. 23

On the use of the metaphor to define agency and personality, especially in book VIII and IX, see Cairns in this volume.

  171-175. 31 Οἷον εἰ δέοι ἡμᾶς ἀνομολογεῖσθαι περί τε ἐκείνης τῆς πόλεως καὶ τοῦ ἐκείνῃ ὁμοίως πεφυκότος τε καὶ τεθραμμένου ἀνδρός, εἰ δοκεῖ ἂν παρακαταθήκην χρυσίου ἢ ἀργυρίου δεξάμενος ὁ τοιοῦτος ἀποστερῆσαι, τίν' ἂν οἴει οἰηθῆναι τοῦτον αὐτὸ δρᾶσαι μᾶλλον ἢ ὅσοι μὴ τοιοῦτοι; Οὐδέν' ἄν, ἔφη. Οὐκοῦν καὶ ἱεροσυλιῶν καὶ κλοπῶν καὶ προδοσιῶν, ἢ ἰδίᾳ ἑταίρων ἢ δημοσίᾳ πόλεων, ἐκτὸς ἂν οὗτος εἴη; ἐκτός. Καὶ μὴν οὐδ' ὁπωστιοῦν γ' ἂν ἄπιστος ἢ κατὰ ὅρκους ἢ κατὰ τὰς ἄλλας ὁμολογίας. Πῶς γὰρ ἄν; Μοιχεῖαί γε μὴν καὶ γονέων ἀμέλειαι καὶ θεῶν ἀθεραπευσίαι παντὶ ἄλλῳ μᾶλλον ἢ τῷ τοιούτῳ προσήκουσι. Παντὶ μέντοι, ἔφη. Οὐκοῦν τούτων πάντων αἴτιον ὅτι αὐτοῦ τῶν ἐν αὐτῷ ἕκαστον τὰ αὑτοῦ πράττει ἀρχῆς τε πέρι καὶ τοῦ ἄρχεσθαι; Τοῦτο μὲν οὖν, καὶ οὐδὲν ἄλλο. Ἔτι τι οὖν ἕτερον ζητεῖς δικαιοσύνην εἶναι ἢ ταύτην τὴν δύναμιν ἣ τοὺς τοιούτους ἄνδρας τε παρέχεται καὶ πόλεις; Μὰ Δία, ἦ δ' ὅς, οὐκ ἔγωγε. Τέλεον ἄρα ἡμῖν τὸ ἐνύπνιον ἀποτετέλεσται, ὃ ἔφαμεν ὑποπτεῦσαι ὡς εὐθὺς ἀρχόμενοι τῆς πόλεως

Olivier Renaut, « Political images of the soul », in Edmonds III, Radcliffe G. & Destrée, P. (eds.) Plato and the power of images, Leiden, Brill, pp.138-157, 2017, Mnemosyne, Supplements 405, DOI : <10.1163/9789004345010_010>. Cette version est le fichier auteur, pre-print, disponible sur <hal-01390550>.

  35 ταύτην δ' εἶναι τὴν τοῦ λογισμοῦ ἀγωγὴν χρυσῆν καὶ ἱεράν, τῆς πόλεως κοινὸν νόμον ἐπικαλουμένην, ἄλλας δὲ σκληρὰς καὶ σιδηρᾶς, τὴν δὲ μαλακὴν ἅτε χρυσῆν οὖσαν, τὰς δὲ ἄλλας παντοδαποῖς εἴδεσιν ὁμοίας. δεῖν δὴ τῇ καλλίστῃ ἀγωγῇ τῇ τοῦ νόμου ἀεὶ συλλαμβάνειν• ἅτε γὰρ τοῦ λογισμοῦ καλοῦ μὲν ὄντος, πρᾴου δὲ καὶ οὐ Olivier Renaut, « Political images of the soul », in Edmonds III, Radcliffe G. & Destrée, P.

(eds.) Plato and the power of images, Leiden, Brill, pp.138-157, 2017, Mnemosyne, Supplements 405, DOI : <10.1163/9789004345010_010>. Cette version est le fichier auteur, pre-print, disponible sur <hal-01390550>.

  βιαίου, δεῖσθαι ὑπηρετῶν αὐτοῦ τὴν ἀγωγήν, ὅπως ἂν ἐν ἡμῖν τὸ χρυσοῦν γένος νικᾷ τὰ ἄλλα γένη.36 On the significance of the educational program in the Laws, seeKamtekar (2010) on physical training and Renaut (2014) 300 sq. on the manipulation of emotions towards virtue.37 On the various fields of reference used by Plato in his metaphors, see Pender

	(2000).
	38 καὶ διὰ ταῦτα δὴ σεβόμενοι μιαίνειν τὸ θεῖον, ὅτι μὴ πᾶσα ἦν ἀνάγκη, χωρὶς
	ἐκείνου κατοικίζουσιν εἰς ἄλλην τοῦ σώματος οἴκησιν τὸ θνητόν, ἰσθμὸν καὶ ὅρον
	διοικοδομήσαντες τῆς τε κεφαλῆς καὶ τοῦ στήθους, αὐχένα μεταξὺ τιθέντες, ἵν' εἴη
	χωρίς. ἐν δὴ τοῖς στήθεσιν καὶ τῷ καλουμένῳ θώρακι τὸ τῆς ψυχῆς θνητὸν γένος

ἐνέδουν. καὶ ἐπειδὴ τὸ μὲν ἄμεινον αὐτῆς, τὸ δὲ χεῖρον ἐπεφύκει, διοικοδομοῦσι τοῦ θώρακος αὖ τὸ κύτος, διορίζοντες οἷον γυναικῶν, τὴν δὲ ἀνδρῶν χωρὶς οἴκησιν, τὰς φρένας διάφραγμα εἰς τὸ μέσον αὐτῶν τιθέντες.

[START_REF] Renaut | L'univers au service de la cité: L'image publique du philosophe[END_REF], we argue that the analogy between the city and the universe found especially in Heraclitus, which claims that the role of the sage is beneficial for the city whose law derives from that of the cosmos, is the basis of a new platonic challenge: how philosophers, in a hostile community, should communicate their true knowledge of the common good.

[START_REF] Pradeau | Platon et la cité[END_REF] 25-26 rightly points out.

[START_REF] Lear | Inside and outside the 'Republic[END_REF] 195: "Plato's point (435e) is not that a spirited polis, say, is spirited simply in virtue of having spirited citizens, but in having spirited citizens who are successful in shaping the polis in their image."

Vegetti (1998) 40-41.

In book VIII, 560d1-561a1, Plato explains, quoting Thucydides, how in democracy

Olivier Renaut, « Political images of the soul », in Edmonds III, Radcliffe G. & Destrée, P. (eds.) Plato and the power of images, Leiden, Brill, pp.138-157, 2017, Mnemosyne, Supplements 405, DOI : <10.1163/9789004345010_010>. Cette version est le fichier auteur, pre-print, disponible sur <hal-01390550>.

BIBLIOGRAPHIE

BLÖSSNER, N. ( 2007) "The City-Soul Analogy," in: G.R. F. Ferrari (ed.), The Cambridge Companion to Plato's Republic, Cambridge, Cambridge University Press, 345-85. BOBONICH, C. (2002) Plato's Utopia Recast: His Later Ethics and Politics, Oxford, Oxford University Press. BROCK R., (2013) Greek Political Imagery from Homer to Aristotle, London, Bloomsbury Publishing. COOPER, J.M. (1998) Reason and emotion: essays on ancient moral psychology and ethical theory, Princeton, Princeton University Press. CROMBIE, I.M. (1962) An Examination of Plato's Doctrines, New-York, Humanities Press. DEMONT, P. (2009) La cité grecque archaïque et classique et l'idéal de tranquillité,Paris, Les Belles Lettres. DESCLOS, M.-L. (2003) Aux marges des dialogues de Platon : Essai d'histoire anthropologique de la philosophie ancienne, Grenoble, Jérôme Millon. DESCLOS, M.L. (1996) "L'Atlantide: une île comme un corps. Histoire d'une transgression" in: F. Létoublon (dir.), Impressions d'îles, Toulouse, Presses Universitaires du Mirail, 141-55. DORION, L.-A. (2007) "Plato and Enkrateia," in: P. Destrée & C. Bobonich (eds.), Akrasia in Greek Philosophy: From Socrates to Plotinus, Leiden, Brill, 119-38. FERRARI, G.R.F. (2005) City and Soul in Plato's Republic, Chicago, University of Chicago Press. GILL, C. (1995) Personality in Greek Epic, Tragedy, and Philosophy: The Self in Dialogue. Oxford, Oxford University Press. JEON, H. (2014) "The Interaction between the Just City and its Citizens in Plato's Republic: From the Producers' Point of View," Journal of the History of Philosophy, 52, 2, 183-203. KAMTEKAR, R. (1998) "Imperfect Virtue," Ancient Philosophy, 18, 315-39. KAMTEKAR, R. (2010) "Psychology and the inculcation of virtue in Plato's Laws," in: C. Bobonich (ed.), Plato's Laws. A Critical guide, Cambridge, Cambridge University Press, 127-48. KÜHN, W. (1994) "Caractères collectifs et individuels. Platon, République IV, 434d2-436b3," Revue de Philosophie Ancienne, 12, 45-64. LARSON, C.W.R. (1951) "The Platonic Synonyms, Dikaiosunh and Swfrosunh," American Journal of Philology, 72, 395-414.

(eds.) Plato and the power of images, Leiden, Brill, pp.138-157, 2017, Mnemosyne, Supplements 405, DOI : <10.1163/9789004345010_010>. Cette version est le fichier auteur, pre-print, disponible sur <hal-01390550>.

ABSTRACT

Folk psychology has traditionally used political images to represent the soul, whether dealing with actions, motivations, or other events, e.g. deliberation and psychic conflict. But the shift from ordinary language or myth to the true essence of the soul must be made with great precaution, especially when a philosopher like Plato employs these metaphors and images with a precise purpose in mind. This paper examines the use of political images (comparisons, analogies and metaphors) which compare the soul to a city, especially those in the Republic. It will be argued that these images aim at representing an ideal ordering of one's soul in a given political society, fulfilling the scope of the city-soul analogy. Political images of the soul are a means for going beyond a mere isomorphism between psychology and politics, and they explain how the two fields interact, so that politics can act upon the soul of the individual. If the city-soul analogy, strictly understood, fails in explaining the valid relations of inclusion between individuals and the city they belong to, the political metaphors are powerful devices for making the rule of law a reality in the city. Transferring the power of reason to the power of law is a task that political metaphors of the soul seem to fulfill for an audience of citizens in the platonic city.

CITATION -VERSION

Olivier Renaut, « Political images of the soul », in Edmonds III, Radcliffe G. & Destrée, P. (eds.) Plato and the power of images, Leiden, Brill, pp.138-157, 2017, Mnemosyne, Supplements 405, DOI : <10.1163/9789004345010_010> Cette version est le fichier auteur, pre-print, disponible sur <hal-01390550>.