text:
Talk:Endosymbiont

Untitled
"they are transmitted via milk to the developing insect embryo" -- Do insects produce milk? 64.253.148.163 00:45, 14 June 2006 (UTC) - I'm interested about these Eucaryota-Endosymbionts. Could you elaborate about them ? Are there any Endosymbionts living in Procaryota ?
 * Some examples.
 * Are they simplified in some way ?
 * Is their replication process different from free Eucaryotas'. ?
 * Do they have mitochondrions ?

I can tell you what I know. First note, though, that mitochondria and chloroplasts are unusual among prokaryotic endosymbionts for being so specialized - most are simply bacteria that can live inside or outside the host. The only analagous eukaryotic endosymbionts I can think of are the chloroplasts of the cryptomonads, which actually contain a reduced nucleus (nucleomorph) in addition to the green prokaryote proper.

For single-celled hosts, zooxanthellae also come to mind. These are tiny green dinoflagellates that live within the frothy outer parts of some amoeboids, and I think in some anenomes. In this case the cells stay in a palmelloid stage - that is they do not have their flagella or their shells - but are otherwise fully intact, and will regenerate if removed from the host. The amoeba I gather receives some energy from them. A similar thing happens with the algae found inside lichens.

Animals have a whole host of bacteria and protozoa in their gut. Of special note here I suppose are the protists that live in the gut of termites and digest cellulose for them. These aren't reduced in any way except possibly in that they lack mitochondria, but it is generally supposed that they branched off before mitochondria were developed, and they contain bacterial endosymbionts instead, which do the digesting for them. And remember that symbionts don't have to be helpful, so trypanosomes and sporozoans as well as larger things like tapeworms and roundworms would count as endosymbionts as well.

I don't think any prokaryotes have endosymbionts, and they certainly don't have any eukaryotic ones - the difference in size of the cells is simply too great. I suppose one might consider viri something of this sort, but generally the requirement is that endosymbionts have to be removeable from the host in some way. Hmm, thinking about it this may invalidate some of the examples above. Well, I hope that was some help, or at least interesting. --Josh Grosse :)

- Hm. Shouldn't this and endosymbiosis be merged? If a merge is in order then all the text should be at the page which describes the phenomenon (sic endosymbiosis). --mav

-

I've merged endosymbiosis and endosymbiont, somewhat arbitrarily deciding that endosymbiont will be the main page, since I guess I've seen this form of the word used more. Few notes:
 * I removed the reference to cellulose-digesting protozoa, since it was kind of vague, and I don't myself know any more info.
 * I put some specific info on nitrogen-fixing bacteria, but not much more info.
 * The page now has an admittedly overblown references section, which is mostly from the primary literature. It'd be great if someone could track down the seminal paper on the endosymbiont theory of mitochondria and chloroplasts, or find some more general-reader references to supplement the academic ones
 * Obviously I know more about bacterial endosymbionts in insects; someone who knows the endosymbiont theory of organelles is enthusiastically encouraged to flesh things out - in particular, I think there's more support for the theory than what I put in.

-user:zashaw

I disagree with the page title since it mixes the two entities in the wrong way. First and foremost endosymbiosis is an evolutionary process so that explanation should be at endosymbiosis. A discussion about particular ones should be at endosymbiont. See how parasitism and parasite are set-up. --mav

--

Hmm. I think I'm approaching this from the side of endosymbionts in insects & then I got into the Endosymbiont Theory of mitochondria & chloroplasts, while it seems like you & others got into this from the mito&chloro side. I thought that "endosymbiosis" merely refers to a relationship between an endosymbiont and a host, and doesn't necessarily have anything to do with evolution. I think this usage is common in the literature, and it's supported by analogy with symbiosis, which just refers to a relationship between a symbiont and host. Looking through some google hits ( http://www.google.com/search?q=endosymbiosis ) and the literature I read earlier seems to support this as the primary usage. However, I see now that many people do use endosymbiosis as an evolutionary process that starts with an endosymbiosis, as you suggest, so that usage should probably be reflected in the article.

As for the splitting, I personally feel that there's not really much point in splitting things into 2 articles, and the distinction between the topics may not be clear to the reader. I realize this is pretty subjective, but in reading the parasitism article, it's not clear that the parasite link will give me examples of parasitism. Perhaps a "parasitism, examples of" link would be more straightforward, although both articles are short enough that I think the examples could be folded into one article.

After some further thinking, perhaps a solution is to put the mito/chloro stuff under the heading "The Endosymbiont Theory", which I've seen used for Margulis's theory (or maybe another term). Under this scheme, I'd propose something like this:
 * The "endosymbiont" article defines endosymbiont AND endosymbiosis (in the non-evolution definition), gives the stuff about endosymbiosis in insects, and briefly makes a reference to the Endosymbiont Theory page.
 * The "Endosymbiont Theory" article briefly makes reference to the endosymbiont article, and then proposes the theory that mito/chloro arose by an ancient endosymbiosis. This article could also optionally discuss endosymbiosis as a evolutionary process in general (see the article on evolution of flagella, though, which I think might have some overlapping info)

This would separate the notions of endosymbiosis as a condition that exists currently in nature (e.g. in insects), vs. endosymbiosis as a proposed mechanism of evolution. I'm guessing that you were concerned that I was conflating endosymbiosis as current fact vs. endosymbiosis as evolutionary process, and we just happened to have different definitions of the word "endosymbiosis"?

What do you think?

--User:zashaw

This may be a difference in usage between sub-disciplines. My training has focused on cellular and micro-biology with an emphasis in evolutionary change and I think you are coming from a different direction that focuses on organisms as they are now. Endosymbiosis, for me, has only been used in reference to the theory about how eukaryotic cells evolved from prokaryotic-like predecessors. When I saw your great additions to this (the endosymbiont) article I at first thought that my understanding of the concept was limited by my specific concentration within biology. I now think that I was in error and the merge has resulted in a greater amount of confusion since the word endosymbiont is used in two, admittedly closely related, ways; But the normal usage of the term endosymbiosis that I am aware of refers to the evolutionary process that resulted in the development of eukaryotic cells. So this needs a separate article that introduces endosymbionts. Oh, and it would be the endosymbiotic theory and not endosymbiont theory since it is a theory about a process and not about the result of that process.
 * the ancient prokaryotes that lived within the progenitor eukaryotic cells were endosymbionts.
 * there are currently other cells that live within cells that are called endosymbionts.

So we might have an article about endosymbiosis that concentrates on the general usage of the term (your usage and mine). This will be a page similar to virus (which is just a glorified disambiguation page turned into an actual article). That article introduces the endosymbiont article (which concentrates on current endosymbionts but mentions the ancient ones) and also the endosymbiotic theory that only talks about Lynn Margulis' etc theory about eukaryotic evolution. You can probably guess that I am a divider and not a lumper. :-) --mav

-

I actually think that makes sense. A PubMed search (for endosymbio* theory at http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed) agrees that it's endosymbiotic theory (although in my defence, a few articles do use endosymbiont theory :-) So, what it sounds like is (note that I'm implicitly suggesting the endosymbiont and endosymbiotic theory pages do a bit of disambiguation themselves in referring to each other, since the concepts are closely related)
 * endosymbiosis: the glorified disambiguation page
 * endosymbiont: defines endosymbiont and gives current examples. mentions the endosymbiotic theory just to link to it.  mentions the different uses of endosymbiosis, linking to the disambiguation page.
 * endosymbiotic theory: discusses Margulis's theory, possibly moving some stuff currently in endosymbiont and evolution of flagella there. Defines endosymbiont and refers to the endosymbiont article.  mentions the different uses of endosymbiosis, linking to the disambiguation page.

I'm going to have only sporadic internet access for the winter break, so if you'd like to try some changes, that'd be cool. We seem to be more or less on the same page about this, so I don't foresee any major flaming afterwards :-P

--User:zashaw

 * Excellent! I'll see if I can get around to this after Christmass. --mav

-

I did the changes myself. (I figured you're okay with this.) As always, feel free to edit things, or comment -- I don't claim I made the changes perfectly :-).  We now have:
 * Endosymbiosis
 * Endosymbiont
 * Endosymbiotic hypothesis

BTW, I also criticized the new Endosymbiotic Hypothesis page (conceding that I'm responsible for much of the content...) You seem to know a lot about evolution, so I'd like to draw you attention to the article's talk page, where I outlined what I think should be done with it.

--User:zashaw

The organization looks good to me. Sorry I didn't do this as promised but updating these day and year pages takes several hours each day. I'll take a look at the talk page and comment. --mav

Sounds good. --User:zashaw

Question
Don't most (all?) higher organisms have organizisms such as bacteria that live inside of them that could be considered endosymbionts? Gut bacteria, etc. I can't recall the article, but I read in a Wikipedia article that rodents of some sort were bred entirely sterile and ended up dying of very odd disorders, the hypothesis being they (and by extension humans) need the bacteria, etc to survive. The article seems to only mention non vertebrate examples. Thanks - Taxman 03:05, May 1, 2005 (UTC)

 * This is a good question. The article currently only gives examples of a couple endosymbioses apparently skewed towards arbitrary subjects that the few people who work on this page are most familiar with.  This includes myself, having added the section on Symbiodinium.  The page can benefit from a broader range of examples.  When we all find the time we should add some other examples.  What comes immediately to mind are Rhizobium associations with plants and the fungal/algal associations of lichens.

 * In the end, what I think would be most useful are very brief descriptions of many different examples. The verbose descriptions for the few examples now present could migrate to the pages for those specific organisms, linked to from the endosymbiont page.

 * With regard to the gut bacteria of vertebrates, it could be said that gut bacteria, being in the gut, are not actually inside the organism, the gut being the interface between the organism and its food from outside. But this is getting into splitting hairs about what is "endo" in the endosymbiosis; some would assert that endosymbiosis only includes intracellular symbiotic relationships anyway.

 * And, yes, it is probable that all multicellular organisms have microbial symbionts.

 * Another thing we might want to discuss here is that symbiosis does not equal mutualism; i.e., parasitic and mutualistic endosymbionts perhaps should qualify just the same?
 * Safay 08:49, 1 December 2005 (UTC)

March 21, 06 Might I add that I think regardless of whether the gut is an 'interface' to the outside world, it still has bacteria that interact with the host, whether its mutual or not. If a bacteria was on the surface of the skin yet was crucial to our survival, the bacteria would still have a symbiosis. Whether it is inner/outter is really almost besides the point, are not all organisms made up (for the most part) of cells? Where does the outter start and the inner end? and would either really effect the role the bacteria has on the respective cells so differently? (An eskimo is still an eskimo regardless of whether it is winter. (environment does not determine its operation, only the way it goes about it))

Seed Magazine article
Bacteria transitioning into organelles, losing genes, Seed: Dead Bacteria Walking, October 20, 2006 ~Kylu ( u | t )  00:12, 23 October 2006 (UTC)

A brief section on evidence for endosymbionts synthesizing certain nutrients in aphids was removed because it was too detailed and seemed to be straying from the topic of endosymbionts. Does anyone feel that some of the headings should be consolidated? (ie. endosymbionts in marine organisms) Lilhuey123 08:44, 8 July 2007 (UTC)

tlc
could there be a section about endosymbionts in fiction, like the thing that lives in Tlc's gut in Stargate CybergothiChé word to your mother 11:28, 5 June 2012 (UTC)

Assessment comment
Substituted at 14:29, 29 April 2016 (UTC)

Spelling by etymology
Endosymbion is also correct because the deepest etymon is on/creature, "t" exists in the genitive case "óntos", and then spread out to other words

 * Etymology is a poor guide to spelling, as languages make arbitrary choices and rearrangements over the centuries. The standard English spelling uses a t, and as you rightly say, that derives from the genitive, as often happened. Chiswick Chap (talk) 09:14, 28 August 2018 (UTC)

Endosymbionts in Humans
This term is new to me, the concept is not. Is it correct to say that humans also live with endosymbionts? Then a section could be devoted to it.

We have microbes in our large intestine devouring fiber, releasing small-chain fatty acids as well as things that are suspected to have medicinal qualities. When these microbes are starved or otherwise hurt, the human organism suffers the metabolic syndrome. Causes that are usually named, and have been shown across medical literature, are a diet short in whole plant foods, abundant in animal food, and rife with highly processed food. — Preceding unsigned comment added by 2001:980:93A5:1:6664:82C6:273C:593A (talk) 12:03, 6 January 2022 (UTC)

Merge Plasmid evolution
I propose the plastid evolution article be merged into this one. They have overlapping scope, and though plastid evolution is the shorter article, it has some information not prsent here (e.g. tertiary endosymbiosis). --Redge (talk) 17:35, 9 March 2022 (UTC)

Wiki Education assignment: Comparative Developmental Biology
— Assignment last updated by Trillmc (talk) 03:40, 27 February 2023 (UTC)

Adding a reference and information for the relationship of the sea slug Elysia Chlorotica and Vaucheria litoria
Added the following reference and citation for the relationship between the two organisms.

Mujer, C V; Andrews, D L; Manhart, J R; Pierce, S K; Rumpho, M E (29 October 1996). "Chloroplast genes are expressed during intracellular symbiotic association of Vaucheria litorea plastids with the sea slug Elysia chlorotica". Proceedings of the National Academy of Sciences. 93 (22): 12333–12338. doi:10.1073/pnas.93.22.12333. ISSN 0027-8424. PMC 37991. PMID 8901581.

Potentially adding the following sentences.

Elysia chlorotica forms this relationship intracellularly with the chloroplasts from the algae. These chloroplast retain their photosynthetic capabilities and structures for several months after being taken into the cells of the slug. Madunn99 (talk) 03:18, 6 February 2023 (UTC)

Revising opening paragraph to endosymbiosis and organells
Propose adding revising the first paragraph in this section to mention current theory of Archaea and bacteria origin

Symbiogenesis explains the origins of eukaryotes, whose cells contain two major kinds of organelle: mitochondria and chloroplasts. The theory proposes the process through which these organelles evolved within the ancestors of eukaryotic organisms through the formation of an endosymbiotic relationship between a bacteria and an archaea This idea is that the ancient Archaean organism engulfed a bacteria that possessed aerobic capabilities. This initial endosymbiotic relationship is believed to have arisen between an Asgard superphylum archaea and an ancient bacteria related to the Rickettsiales lineage. The bacterial endosymbiont would have been used for its metabolic capabilities, and is believed to have eventually developed into the mitochondria that is found in eukaryotic cells. Evidence pointing to this theory involves the evolutionary history of the two groups and their DNA structure. Eukaryotes are believed to have arisen from a common ancestor they possess with archaeans, which also points to archaeans being more closely related to eukaryotes than bacteria. When looking at the DNA found in the nucleus of a cells and the mitochondria. the nuclear DNA of a eukaryote more closely resembles the DNA of an organism belonging to the domain Archaea, while the mitochondrial DNA is more closely related in structure to the DNA of a bacteria organism. The chloroplast is theorized to have arisen from a eukaryotic cell already possessing a mitochondria enveloping and taking in a cyanobacteria that possessed photosynthetic capabilities.

Koonin, Eugene V. (2015-09-26). "Origin of eukaryotes from within archaea, archaeal eukaryome and bursts of gene gain: eukaryogenesis just made easier?". Philosophical Transactions of the Royal Society B: Biological Sciences. 370 (1678): 20140333. doi:10.1098/rstb.2014.0333. ISSN 0962-8436. PMC 4571572. PMID 26323764.

Glansdorff, Nicolas; Xu, Ying; Labedan, Bernard (2008-07-09). "The Last Universal Common Ancestor: emergence, constitution and genetic legacy of an elusive forerunner". Biology Direct. 3: 29. doi:10.1186/1745-6150-3-29. ISSN 1745-6150. PMC 2478661. PMID 18613974.

Boguszewska, Karolina; Szewczuk, Michał; Kaźmierczak-Barańska, Julia; Karwowski, Bolesław T. (2020-06-21). "The Similarities between Human Mitochondria and Bacteria in the Context of Structure, Genome, and Base Excision Repair System". Molecules. 25 (12): 2857. doi:10.3390/molecules25122857. ISSN 1420-3049. PMC 7356350. PMID 32575813. Madunn99 (talk) 23:21, 5 March 2023 (UTC)

 * Many thanks for the thoughts. However, the lead section is just a summary of the rest of the article. It must never introduce "new" materials not already discussed and cited in the article body. Therefore, a rewrite such as you propose is back-to-front. If the article is wrong or outdated, update and cite it. Then, if the lead needs to be adjusted slightly to reflect the changed balance in the article, adjust it: the citations do not need to be repeated in the lead.

 * There is actually a different problem with the sources you list here (leaving aside that they aren't in the correct citation templates): they are on very broad topics only tangentially related to the subject of this article. These topics are covered in several other articles already, such as eukaryote, last universal common ancestor, and DNA repair (to name just a few).

 * Therefore, probably best to hold off on any major changes. Chiswick Chap (talk) 10:50, 7 March 2023 (UTC)

 * : I'm disappointed to see that "hold off" is in your mind equated to "try half of it even if not agreed". You have been told that the lead is JUST A SUMMARY, NOT A PLACE FOR "NEW" MATERIALS AND CITATIONS, so you ... introduce new citations. I've obviously reverted that as contrary to policy, and given that we were discussing the matter to reach some kind of agreement on what (if anything) is needed, actively unhelpful. If you want to discuss improvements, feel free to do so here. If not, please leave the article alone. Many thanks. Chiswick Chap (talk) 18:31, 1 April 2023 (UTC)

 * And I really can't see why your reply to a request for discussion should be to add some material on the spotted salamander. Why would we need more detail on that, especially if the matter is said to be unclear? Please explain. I think we can do better than this. Thanks. Chiswick Chap (talk) 18:40, 1 April 2023 (UTC)
 * I apologize for my disturbances and incorrect editing process. I am sorry for any disruptions I have caused and will strive to be a better editor. Madunn99 (talk) 00:16, 3 April 2023 (UTC)

title: Talk:Endosymbiont


text:
Eschatology

Eschatology concerns expectations of the end of present age, human history, or the world itself. The end of the world or end times is predicted by several world religions (both Abrahamic and non-Abrahamic), which teach that negative world events will reach a climax. Belief that the end of the world is imminent is known as apocalypticism, and over time has been held both by members of mainstream religions and by doomsday cults. In the context of mysticism, the term refers metaphorically to the end of ordinary reality and to reunion with the divine. Religions treat eschatology as a future event prophesied in sacred texts or in folklore. While other religions may have concepts of renewal or transformation after significant events, the explicit description of a new earth is primarily found in Christian teachings within the context of eschatology, this description can be found in Chapter 21 of the Book of Revelation.

The Abrahamic religions maintain a linear cosmology, with end-time scenarios containing themes of transformation and redemption. In Judaism, the term "end of days" makes reference to the Messianic Age and includes an in-gathering of the exiled Jewish diaspora, the coming of the Messiah, the resurrection of the righteous, and the world to come. Christianity depicts the end time as a period of tribulation that precedes the second coming of Christ, who will face the rise of the Antichrist along with his power structure and false prophets, and usher in the Kingdom of God. In later traditions of Islam, separate hadiths detail the Day of Judgment is preceded by the appearance of the Masīḥ ad-Dajjāl, and followed by the descending of ʿĪsā (Jesus), which shall triumph over the false Messiah or Antichrist; his defeat will lead to a sequence of events that will end with the sun rising from the west and the beginning of the Qiyāmah (Judgment Day).

Dharmic religions tend to have more cyclical worldviews, with end-time eschatologies characterized by decay, redemption, and rebirth (though some believe transitions between cycles are relatively uneventful). In Hinduism, the end time occurs when Kalki, the final incarnation of Vishnu, descends atop a white horse and brings an end to the current Kali Yuga, completing a cycle that starts again with the regeneration of the world. In Buddhism, the Buddha predicted his teachings would be forgotten after 5,000 years, followed by turmoil. It says a bodhisattva named Maitreya will appear and rediscover the teachings of the Buddha Dharma, and that the ultimate destruction of the world will then come through seven suns.

Since the development of the concept of deep time in the 18th century the calculation of the estimated age of planet Earth, scientific discourse about end times has considered the ultimate fate of the universe. Theories have included the Big Rip, Big Crunch, Big Bounce, and Big Freeze (heat death). Social and scientific commentators also worry about global catastrophic risks and scenarios that could result in human extinction.

Etymology
The word "eschatology" arises from the Ancient Greek term ἔσχατος (éschatos), meaning "last", and -logy, meaning "the study of", and first appeared in English around 1844. The Oxford English Dictionary defines eschatology as "the part of theology concerned with death, judgment, and the final destiny of the soul and of humankind".

Judaism

The main tenets of modern Jewish eschatology, in no particular order, include:
 * God will redeem Israel from the captivity that began during the Babylonian Exile in a new Exodus.
 * God will return the Jewish people to the Land of Israel.
 * God will restore the House of David and the Temple in Jerusalem.
 * God will raise up a regent from the House of David, the Jewish Messiah, to lead the Jewish people and the world and to usher in an age of justice and peace, the Messianic Age.
 * Non-Jews will recognize that the God of Israel is the only true god.
 * God will resurrect the dead.
 * God will create a new heaven and earth.

Judaism usually refers to the end times as the "end of days" (aḥarit ha-yamim, אחרית הימים), a phrase that appears several times in the Tanakh. The end times are addressed in the Book of Daniel and in numerous other prophetic passages in the Hebrew scriptures, and also in the Talmud, particularly Tractate Avodah Zarah.

The idea of a Messianic Age, an era of global peace and knowledge of the Creator, has a prominent place in Jewish thought, and is incorporated as part of the end of days. A well-known passage from the Book of Isaiah describes this future condition of the world: "They shall beat their swords into plowshares and their spears into pruning hooks; nation will not lift sword against nation and they will no longer study warfare" (2:4). Maimonides (1135–1204) further describes the Messianic Era in the Mishneh Torah: "And at that time there will be no hunger or war, no jealousy or rivalry. For the good will be plentiful, and all delicacies available as dust. The entire occupation of the world will be only to know God;... the people Israel will be of great wisdom; they will perceive the esoteric truths and comprehend their Creator's wisdom as is the capacity of man. As it is written (Isaiah 11:9): 'For the earth shall be filled with the knowledge of God, as the waters cover the sea.'"

Kabbalah
In Kabbalah, the Zohar maintains that the seven days of the week, based on the seven days of creation, correspond to the seven millennia of creation. The seventh day of the week, the Shabbat day of rest, corresponds to the seventh millennium, the age of universal rest, or the Messianic Era. The seventh millennium begins with the year 6000 AM, and is the latest time the Messiah can come. A number of early and late Jewish scholars have written in support of this, including the Ramban, Isaac Abarbanel, Abraham Ibn Ezra, Rabbeinu Bachya, the Vilna Gaon, the Lubavitcher Rebbe, the Ramchal, Aryeh Kaplan and Rebbetzin Esther Jungreis.

Zoroastrianism
Frashokereti is the Zoroastrian doctrine of a final renovation of the universe when evil will be destroyed, and everything else will then be in perfect unity with God (Ahura Mazda). The doctrinal premises are:
 * 1) Good will eventually prevail over evil.
 * 2) Creation, initially perfectly good, was subsequently corrupted by evil.
 * 3) The world will ultimately be restored to the perfection it had at the time of creation.
 * 4) The "salvation for the individual depended on the sum of [that person's] thoughts, words and deeds, and there could be no intervention, whether compassionate or capricious, by any divine being to alter this". Thus each human bears the responsibility for the fate of his own soul, and simultaneously shares in the responsibility for the fate of the world.

Zoroastrian eschatology is considered one of the oldest in recorded history. The birth of its founder, Zoroaster, is unknown, with scholarly dates ranging from 500 BCE to 1,500 BCE. Pliny the Elder even suggests there were two Zoroasters. However, with beliefs paralleling and possibly predating the framework of the major Abrahamic faiths, a fully developed concept of the end of the world was not established in Zoroastrianism until 500 BCE. The Bahman Yasht describes: "At the end of thy tenth hundredth winter, the sun is more unseen and more spotted; the year, month, and day are shorter; and the earth is more barren; and the crop will not yield the seed. And men become more deceitful and more given to vile practices. They will have no gratitude. Honorable wealth will proceed to those of perverted faith. And a dark cloud makes the whole sky night, and it will rain more noxious creatures than water."

A battle between the righteous and wicked will be followed by the Frashokereti. On earth, the Saoshyant will arrive as the final savior of mankind, and bring about the resurrection of the dead. The yazatas Airyaman and Atar will melt the metal in the hills and mountains, which will flow as lava across the earth and all mankind, both the living and resurrected, will be required to wade through it. Ashavan will pass through the molten river as if it were warm milk, but the sinful will burn. It will then flow down to hell, where it will annihilate Angra Mainyu and the last vestiges of wickedness.

The righteous will partake of the parahaoma, which will confer immortality upon them. Humanity will become like the Amesha Spentas, living without food, hunger, thirst, weapons or injury. Bodies will become so light as to cast no shadow. All humanity will speak a single language, and belong to a single nation with no borders. All will share a single purpose and goal, joining with Ahura Mazda for a perpetual and divine exaltation.

Gnosticism
The Gnostic codex On the Origin of the World (possibly dating from near the end of the third century AD) states that during what is called the consummation of the age, the Sun and Moon will become dark as the stars change their ordinary course. Kings will make war with each other, and thunder will cause the world to be shaken. The corrupt Archons will mourn. The sea will be troubled by fighting of the kings who became drunk from the flaming sword. Finally, great thunder will come from Sophia, the woman in the firmament above the forces of Chaos. She will cast the corrupt gods into the abyss where they will fight each other until only their chief Yaldabaoth remains and destroys himself. Next the heavens of the Archons will collapse on each other before the Earth sinks into the abyss. Light will cover the darkness and eliminate it then form into something greater than anything that ever existed before. The source of the darkness will dissolve, and the deficiency will be taken from its root. Those who were not perfected in the unconceived one will receive glories in their realms and kingdoms of the immortals, but those who were will enter a kingless realm. All will be judged according to their deeds and gnosis.

Christianity
Christian eschatology is the study concerned with the ultimate destiny of the individual soul and of the entire created order, based primarily upon biblical texts within the Old and New Testaments.

Christian eschatological research looks to study and discuss matters such as the nature of the divine and the divine nature of Jesus Christ, death and the afterlife, Heaven and Hell, the Second Coming of Jesus, the resurrection of the dead, the rapture, the Tribulation, millennialism, the end of the world, the Last Judgment, and the New Heaven and New Earth in the world to come.

Eschatological passages occur in many places in the Bible, in both the Old and the New Testaments. In the Old Testament, apocalyptic eschatology can be found notably in Isaiah 24–27, Isaiah 56–66, Joel, Zechariah 9–14 as well as in the closing chapters of Daniel, and in Ezekiel. In the New Testament, applicable passages include Matthew 24, Mark 13, the parable of "The Sheep and the Goats" and the Book of Revelation—Revelation often occupies a central place in Christian eschatology.

The Second Coming of Christ is the central event in Christian eschatology within the broader context of the fullness of the Kingdom of God. Most Christians believe that death and suffering will continue to exist until Christ's return. There are, however, various views concerning the order and significance of other eschatological events.

The Book of Revelation stands at the core of much of Christian eschatology. The study of Revelation is usually divided into four interpretative methodologies or hermeneutics:
 * The Futurist approach treats the Book of Revelation mostly as unfulfilled prophecy taking place in some yet undetermined future.
 * The Preterist approach interprets Revelation chiefly as having had prophetic fulfillment in the past, principally in the events of the first century CE.
 * The Historicist approach places Revelation within the context of history, identifying figures and passages in Revelation with major historical people and events. This view was commonly held by the early Christian church, then among the predecessors to Protestantism, such as John Wycliffe, Joachim of Fiore and later by the majority of Protestant Reformers, such as Martin Luther,  John Calvin, and John Wesley. Further supporters of this view included Isaac Newton (1642–1727), among others.
 * The Idealist approach sees the events of Revelation as neither past nor future actualities, but as purely symbolic accounts, dealing with the ongoing struggle and ultimate triumph of good over evil.

Date
First-century Christians believed Jesus would return during their lifetime. When the converts of Paul in Thessalonica were persecuted by the Roman Empire, they believed the end of days to be imminent. Most of the scholars participating in the third quest hold that Jesus was an eschatological prophet who believed the "Kingdom of God" was coming within his own lifetime or within the lifetime of his contemporaries. This view, generally known as "consistent eschatology," was influential during the early to the mid—twentieth century and continues to be influential today in proposed portraits of the Historical Jesus. However, C. H. Dodd and others have insisted on a "realized eschatology" that says Jesus' own ministry fulfilled prophetic hopes. Many conservative scholars have adopted the paradoxical position the Kingdom of God passages describes a kingdom that is both "present" and "still to come" claiming Pauline eschatology as support. R. T. France and N. T. Wright among others have taken Jesus' apocalyptic statements of an imminent end, historically, as referring to the fall of Jerusalem and the destruction of the Temple in 70 AD. A number of interpretations of the term "Kingdom of God" have thus appeared in its eschatological context, e.g., apocalyptic, realized or Inaugurated eschatologies, yet no consensus has emerged among scholars.

While some who believe in the literal interpretation of the Bible insist the prediction of dates or times is futile, others believe Jesus foretold signs of the end of days. The precise time, however, will come like a "thief in the night". They may also refer to in which Jesus is quoted as saying: "'But concerning that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father only.'"

Great Tribulation
In the New Testament, Jesus refers to this period preceding the end times as the "Great Tribulation", "Affliction" , and "days of vengeance".

The Book of Matthew describes the devastation: "When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand). Then let them which be in Judaea flee into the mountains. Let him which is on the housetop not come down....Neither let him which is in the field return back to take his clothes, and woe unto them that are with child....For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened."

The resulting chaos will affect pregnancies, newborns, and a scourge will spread throughout the flesh, save for the elect. The vivid imagery of this section is repeated closely in.

The Gospel of Luke describes a complete unraveling of the social fabric, with widespread calamity and war: "Then he said to them, 'Nation will rise against nation, and kingdom against kingdom. There will be great earthquakes, and in various places famines and pestilences. And there will be terrors and great signs from heaven. But before all this they will lay their hands on you and persecute you, delivering you up to the synagogues and prisons, and you will be brought before kings and governors for my name's sake. This will be your opportunity to bear witness. Settle it therefore in your minds not to meditate beforehand how to answer, for I will give you a mouth and wisdom, which none of your adversaries will be able to withstand or contradict. You will be delivered up even by parents and brothers and relatives and friends, and some of you they will put to death. You will be hated by all for my name's sake. But not a hair of your head will perish. By your endurance you will gain your lives.

'But when you see Jerusalem surrounded by armies, then know that its desolation has come near. Then let those who are in Judea flee to the mountains, and let those who are inside the city depart, and let not those who are out in the country enter it, for these are days of vengeance, to fulfill all that is written. Alas for women who are pregnant and for those who are nursing infants in those days! For there will be great distress upon the earth and wrath against this people. They will fall by the edge of the sword and be led captive among all nations, and Jerusalem will be trampled underfoot by the Gentiles, until the times of the Gentiles are fulfilled.

'And there will be signs in sun and moon and stars, and on the earth distress of nations in perplexity because of the roaring of the sea and the waves, people fainting with fear and with foreboding of what is coming on the world. For the powers of the heavens will be shaken. And then they will see the Son of Man coming in a cloud with power and great glory. Now when these things begin to take place, straighten up and raise your heads, because your redemption is drawing near.'

And he told them a parable: 'Look at the fig tree, and all the trees. As soon as they come out in leaf, you see for yourselves and know that the summer is already near. So also, when you see these things taking place, you know that the kingdom of God is near. Truly, I say to you, this generation will not pass away until all has taken place. Heaven and earth will pass away, but my words will not pass away.'"

In the Book of Revelation, the "great tribulation" (Rev. 7:14b) refers to a time of affliction upon God's people.

Catholicism
The Profession of Faith addresses Catholic beliefs concerning the last days. Catholicism adheres to the amillennial school of thought, promoted by Augustine of Hippo in his work The City of God.

Protestantism
Contemporary use of the term End Times has evolved from literal belief in Christian millennialism. In this tradition, Biblical apocalypse is believed to be imminent, with various current events as omens of impending Armageddon. These beliefs have been put forward by the Adventist movement (Millerites), Jehovah's Witnesses, and dispensational premillennialists. In 1918 a group of eight, well-known preachers produced the London Manifesto, warning of an imminent second coming of Christ shortly after the 1917 liberation of Jerusalem by the British.

Millennialists and Amillennialists

Protestants are divided between Millennialists and Amillennialists. Millennialists concentrate on the issue of whether the true believers will see the Great Tribulation or be removed from it by what is referred to as a Pre-Tribulation rapture.

Amillennialists believe the end times encompass the time from Christ's ascension to the last day, and maintain that the mention of the "thousand years" in the Book of Revelation is meant to be taken metaphorically (i.e., not literally), a view which continues to cause divisions within Protestant Christianity.

There is a range of eschatological belief in Protestant Christianity. Christian premillennialists who believe the end times are occurring now, are usually specific about timelines that climax in the end of the world. For some, Israel, the European Union, or the United Nations are seen as major players whose roles were foretold in scripture. Within dispensational premillennialist writing, there is the belief that Christians will be summoned to Heaven by Christ at the rapture, occurring before a Great Tribulation prophesied in Matthew 24–25; Mark 13 and Luke 21. The Tribulation is described in the Book of Revelation.

"End times" may also refer to the passing of an age or long period in the relationship between man and God. Adherents to this view cite the Second Epistle to Timothy and draw analogies to the late twentieth and early twenty-first centuries.

Post-Exilic Hebrew books of prophecy such as Daniel and Ezekiel are given new interpretations in this Christian tradition, while apocalyptic forecasts appear in the Judeo-Christian Sibylline Oracles which include the Book of Revelation ascribed to John, the apocryphal Apocalypse of Peter, and the Second Book of Esdras.

Adventists and Millerites
Religious movements which expect that the second coming of Christ will be a cataclysmic event are generally called adventism. These have arisen throughout the Christian era, but were particularly common after the Protestant Reformation. Emanuel Swedenborg considered the second coming to be symbolic, and to have occurred in 1757. Along with others, he developed a religious system around the second coming of Christ, disclosed by new prophecy or special revelation not described in the Bible. The Millerites are diverse religious groups which similarly rely upon a special gift of interpretation for predicting the second coming.

The difference between the 19th-century Millerite and adventist movements and contemporary prophecy is that William Miller and his followers, based on biblical interpretation, predicted the time of the Second Coming to have occurred in 1844. Contemporary writing of end time has suggested the timetable will be triggered by future wars and moral catastrophe, and that this time of tribulation is close at hand.

Seventh-day Adventists believe biblical prophecy to foretell an end time scenario in which the United States works in conjunction with the Catholic Church to mandate worship on a day other than the true Sabbath, Saturday, as prescribed in the Ten Commandments (Exodus 20:8–11). This will bring about a situation where one must choose for or against the Bible as the will of God.

Preterists
Another view of the end times is preterism. It distinguishes the time of the end from the end of time. Preterists believe the term last days (or Time of the End) refers to, neither the last days of the Earth, nor the last days of humankind, but the end of the Old Covenant between God and Israel; which, according to preterism, took place when the Temple in Jerusalem was destroyed in 70 CE.

Preterists believe that prophecies—such as the Second Coming, the desecration of the Jewish Temple, the destruction of Jerusalem, the rise of the Antichrist, the Great Tribulation, the advent of The Day of the Lord, and a Final Judgment—had been fulfilled when the Romans sacked Jerusalem and completely destroyed its Temple.

Proponents of full preterism do not believe in a coming resurrection of the dead. They place this event (as well as the Second Coming) in the year 70. Advocates of partial preterism do believe in a coming resurrection. Full preterists contend that partial preterists are merely futurists, since they believe the Second Coming, the Resurrection, the Rapture, and the Judgment are yet to come.

Many preterists believe first-century Christians experienced the Rapture to rejoin the Christ.

According with Preterism's interpretation of end times, many "time passages" in the New Testament foretell a Second Coming of Christ, with last days to take place within the lifetimes of his disciples: Matt. 10:23, Matt. 16:28, Matt. 24:34, Matt. 26:64, Rom. 13:11–12, 1 Cor. 7:29–31, 1 Cor. 10:11, Phil. 4:5, James 5:8–9, 1 Pet. 4:7, 1 Jn. 2:18.

Dispensationalists
Dispensationalism is an evangelical futurist Biblical interpretation that foresees a series of dispensations, or periods, in which God relates to human beings under different Biblical covenants. The belief system is primarily rooted in the writings of John Nelson Darby and is premillennial in content. The reestablishment of Israel in 1948 provided a major impetus to the dispensationalist belief system. The wars of Israel after 1948 with its Arab neighbors provided further support, according to John F. Walvoord. After the Six-Day War in 1967, and the Yom Kippur War in 1973, it seemed plausible to many Fundamentalist Christians in the 1970s that Middle East turmoil may well be leading up to the fulfillment of various Bible prophecies and to the Battle of Armageddon.

Members of the dispensationalist movement such as Hal Lindsey, J. Dwight Pentecost, John Walvoord, all of whom have Dallas Theological Seminary backgrounds, and some other writers, claimed further that the European Economic Community, which preceded the European Union, would become a United States of Europe, which would in turn become a Revived Roman Empire ruled by the Antichrist. The Revived Roman Empire also figured into the New Testament writers' vision of the future. The fact that in the early 1970s, there were (erroneously thought to be) seven nations in the European Economic Community was held to be significant; this aligned the Community with a seven-headed beast mentioned in Revelation. This specific prophecy has required revision, but the idea of a Revived Roman Empire remains.

Dispensationalism, in contrast to the Millerite Adventist movement, had its beginning in the 19th century, when John Nelson Darby, founder of the Plymouth Brethren religious denomination, incorporated into his system of Biblical interpretation a system of organizing Biblical time into a number of discrete dispensations, each of which marks a separate covenant with God. Darby's beliefs were widely publicized in Cyrus I. Scofield's Scofield Reference Bible, an annotated Bible that became popular in the United States.

Since the majority of the Biblical prophets were writing at a time when the Temple in Jerusalem was still functioning, they wrote as if it would still be standing during the prophesied events. According to preterism, this was a fulfillment of the prophecies. However, according to Futurists, their destruction in AD 70 put the prophetic timetable on hold. Many such believers therefore anticipated the return of Jews to Israel and the reconstruction of the Temple before the Second Coming could occur.

Post-tribulation pre-millennialism
A view of the Second Coming of Christ as held by post-tribulational pre-millennialists holds that the Church of Christ will have to undergo great persecution by being present during the great tribulation.

Specific prophetic movements

In 1843, William Miller made the first of several predictions that the world would end in only a few months. As his predictions did not come true (referred to as the Great Disappointment), followers of Miller went on to found separate groups, the most successful of which is the Seventh-day Adventist Church.

Members of the Baháʼí Faith believe Miller's interpretation of signs and dates of the coming of Jesus were, for the most part, correct. They believe the fulfillment of biblical prophecies of the coming of Christ came through a forerunner of their own religion, the Báb. According to the Báb's words, 4 April 1844 was "the first day that the Spirit descended" into his heart. His subsequent declaration to Mullá Husayn-i Bushru'i that he was the "Promised One"—an event now commemorated by Baháʼís as a major holy day—took place on 23 May 1844. It was in October of that year that the Báb embarked on a pilgrimage to Mecca, where he openly declared his claims to the Sharif of Mecca. The first news coverage of these events in the West was in 1845 by The Times, followed by others in 1850 in the United States. The first Baháʼí to come to America was in 1892. Several Baháʼí books and pamphlets make mention of the Millerites, the prophecies used by Miller and the Great Disappointment, most notably William Sears's Thief in the Night.

Restorationism (Christian primitivism)
End times theology is also significant to restorationist Christian religions, which consider themselves distinct from both Catholicism and Protestantism.

Jehovah's Witnesses
The eschatology of Jehovah's Witnesses is central to their religious beliefs. They believe Jesus Christ has been ruling in heaven as king since 1914 (a date they believe was prophesied in the Bible) and that after that time a period of cleansing occurred, resulting in God's selection of the Bible Students associated with Charles Taze Russell as his people in 1919. They also believe that the destruction of those who reject the Bible's message and thus willfully refuse to obey God will shortly take place at Armageddon, ensuring that the beginning of the new earthly society will be composed of willing subjects of that kingdom.

The religion's doctrines surrounding 1914 are the legacy of a series of emphatic claims regarding the years 1799, 1874, 1878, 1914, 1918 and 1925 made in the Watch Tower Society's publications between 1879 and 1924. Claims about the significance of those years, including the presence of Jesus Christ, the beginning of the "last days", the destruction of worldly governments and the earthly resurrection of Jewish patriarchs, were successively abandoned. In 1922 the society's principal magazine, The Watchtower, described its chronology as "no stronger than its weakest link", but also claimed the chronological relationships to be "of divine origin and divinely corroborated... in a class by itself, absolutely and unqualifiedly correct" and "indisputable facts", and repudiation of Russell's teachings was described as "equivalent to a repudiation of the Lord".

The Watch Tower Society has acknowledged its early leaders promoted "incomplete, even inaccurate concepts". The Governing Body of Jehovah's Witnesses says that, unlike Old Testament prophets, its interpretations of the Bible are not inspired or infallible. It says that Bible prophecies can be fully understood only after their fulfillment, citing examples of biblical figures who did not understand the meaning of prophecies they received. Watch Tower Society literature often cites Proverbs 4:18, "The path of the righteous ones is like the bright light that is getting lighter and lighter until the day is firmly established" (NWT) to support their view that there would be an increase in knowledge during "the time of the end", and that this increase in knowledge needs adjustments. Watch Tower Society publications also say that unfulfilled expectations are partly due to eagerness for God's Kingdom and that they do not call their core beliefs into question.

The Church of Jesus Christ of Latter-day Saints
Members of the Church of Jesus Christ of Latter-day Saints (LDS Church) believe there will be a Second Coming of Jesus to the earth at some time in the future. The LDS Church and its leaders do not make any predictions of the date of the Second Coming.

According to church doctrine, the true gospel will be taught in all parts of the world prior to the Second Coming. They also believe there will be increasing war, earthquakes, hurricanes, and man-made disasters prior to the Second Coming. Disasters of all kind will happen before Christ comes. Upon the return of Jesus Christ, all people will be resurrected, the righteous in a first resurrection and the unrighteous in a second, later resurrection. Christ shall reign for a period of 1000 years, after which the Final Judgment will occur.

Realized eschatology
Realized eschatology is a Christian eschatological theory that holds that the eschatological passages in the New Testament do not refer to the future, but instead refer to the ministry of Jesus and his lasting legacy.

Islam

Muslims believe there are three periods before the Day of Judgment with some debate as to whether the periods could overlap.

Sunni
Sunnis believe the dead will then stand in a grand assembly, awaiting a scroll detailing their righteous deeds, sinful acts and ultimate judgment. Muhammad will be the first to be resurrected. Punishments will include adhab, or severe pain and embarrassment, and khizy or shame. There will also be a punishment of the grave between death and the resurrection. Several Sunni scholars explain some of the signs metaphorically. The signs of the coming end time are divided into major and minor signs: Following the second period, the third is said to be marked by the ten major signs known as alamatu's-sa'ah al- kubra (The major signs of the end). They are as follows:

 * 1) A huge black cloud of smoke (dukhan) will cover the earth.
 * 2) Three sinkings of the earth, one in the East.
 * 3) One sinking of the earth in the West.
 * 4) One sinking of the earth in Arabia.
 * 5) The false messiah—anti-Christ, Masih ad-Dajjal—shall appear with great powers as a one-eyed man with his right eye blind and deformed like a grape. Although believers will not be deceived, he will claim to be God, to hold the keys to heaven and hell, and will lead many astray. In reality, his heaven is hell, and his hell is heaven. The Dajjal will be followed by seventy thousand Jews of Isfahan wearing Persian shawls.
 * 6) The return of Isa (Jesus), from the fourth sky, to kill Dajjal.
 * 7) Ya'jooj and Ma'jooj (Gog and Magog), a Japhetic tribe of vicious beings who had been imprisoned by Dhul-Qarnayn, will break out. They will ravage the earth, drink all the water of Lake Tiberias, and kill all believers in their way. Isa, Imam Al-Mahdi, and the believers with them will go to the top of a mountain and pray for the destruction of Gog and Magog. God eventually will send disease and worms to wipe them out.
 * 8) The sun will rise from the West.
 * 9) The Dabbat al-ard, or Beast of the Earth, will come out of the ground to talk to people.
 * 10) The second blow of the trumpet will be sounded, the dead will return to life, and a fire will come out of Yemen that shall gather all to Mahshar Al Qiy'amah (The Gathering for Judgment).

Shia
Many of the signs shown above are shared by both Sunni and Shia beliefs, with some exceptions, e.g. Imam Al-Mahdi defeating Al-Masih ad-Dajjal.

Concepts and terminology in Shia eschatology include Mi'ad, the Occultation, Al-Yamani, and Sufyani. In Twelver Shia narrations about the last days, the literature largely revolves around Muhammad al-Mahdi, who is considered by many beliefs to be the true twelfth appointed successor to Muhammad. Muhammad al-Mahdi will help mankind against the deception by the Dajjal who will try to get people in to a new world religion which is called "the great deception".

Ahmadiyya
Ahmadiyya is considered distinct from mainstream Islam. In its writing, the present age has been witness to the evil of man and wrath of God, with war and natural disaster. Ghulam Ahmad is seen as the promised Messiah and the Mahdi, fulfilling Islamic and Biblical prophecies, as well as scriptures of other religions such as Hinduism. His teaching will establish spiritual reform and establish an age of peace. This will continue for a thousand years, and will unify mankind under one faith.

Ahmadis believe that despite harsh and strong opposition and discrimination they will eventually be triumphant and their message vindicated both by Muslims and non-Muslims alike. Ahmadis also incorporate the eschatological views from other religions into their doctrine and believe Mirza Ghulam Ahmed falls into this sequence.

Baháʼí Faith

In the Baháʼí Faith, creation has neither a beginning nor an end; Baháʼís regard the eschatologies of other religions as symbolic. In Baháʼí belief, human time is marked by a series of progressive revelations in which successive messengers or prophets come from God. The coming of each of these messengers is seen as the day of judgment to the adherents of the previous religion, who may choose to accept the new messenger and enter the "heaven" of belief, or denounce the new messenger and enter the "hell" of denial. In this view, the terms "heaven" and "hell" become symbolic terms for a person's spiritual progress and their nearness to or distance from God. In Baháʼí belief, Bahá'u'lláh (1817-1892), the founder of the Baháʼí Faith, was the Second Coming of Christ and also the fulfilment of previous eschatological expectations of Islam and other major religions.

The inception of the Baháʼí Faith coincides with Great Disappointment of the Millerite prophecy in 1844.

ʻAbdu'l-Bahá taught that Armageddon would begin in 1914, but without a clear indication of its end date. Baháʼís believe that the mass martyrdom anticipated during the End Times had already passed within the historical context of the Baháʼí Faith. Baháʼís expect their faith to be eventually embraced by the masses of the world, ushering in a golden age.

Rastafari
Rastafari have a unique interpretation of end times, based on the Old Testament and the Book of Revelation. They believe Ethiopian Emperor Haile Selassie I to be God incarnate, the King of kings and Lord of lords mentioned in Revelation 5:5. They saw the crowning of Selassie as the second coming, and the Second Italo-Ethiopian War as fulfillment of Revelation. There is also the expectation that Selassie will return for a day of judgment and bring home the "lost children of Israel", which in Rastafari refers to those taken from Africa through the slave trade. There will then be an era of peace and harmony at Mount Zion in Africa.

Hinduism
The Vaishnavite tradition links contemporary Hindu eschatology to the figure of Kalki, the tenth and last avatar of Vishnu. Many Hindus believe that before the age draws to a close, Kalki will reincarnate as Shiva and simultaneously dissolve and regenerate the universe. Shaivites hold the view that Shiva is incessantly destroying and creating the world.

In Hindu eschatology, time is cyclic and consists of kalpas. Each lasts 4.1–8.2 billion years, which is a period of one full day and night for Brahma, who will be alive for 311 trillion, 40 billion years. Within a kalpa there are periods of creation, preservation and decline. After this larger cycle, all of creation will contract to a singularity and then again will expand from that single point, as the ages continue in a religious fractal pattern.

Within the current kalpa, there are four epochs that encompass the cycle. They progress from a beginning of complete purity to a descent into total corruption. The last of the four ages is Kali Yuga (which most Hindus believe is the current time), characterized by quarrel, hypocrisy, impiety, violence and decay. The four pillars of dharma will be reduced to one, with truth being all that remains. As written in the Gita:

Yadā yadā hi dharmasya glānirbhavati Bhārata Abhyutthānam adharmasya tadātmānam sṛjāmyaham

O descendant of Bharata, whenever there is a decline of religion and an increase in irreligion, at that time I manifest My eternally perfect form in this mundane world.

At this time of chaos, the final avatar, Kalki, endowed with eight superhuman faculties will appear on a white horse. Kalki will amass an army to "establish righteousness upon the earth" and leave "the minds of the people as pure as crystal."

At the completion of Kali Yuga, the next Yuga Cycle will begin with a new Satya Yuga, in which all will once again be righteous with the reestablishment of dharma. This, in turn, will be followed by epochs of Treta Yuga, Dvapara Yuga and again another Kali Yuga. This cycle will then repeat until the larger cycle of existence under Brahma returns to the singularity, and a new universe is born. The cycle of birth, growth, decay, and renewal at the individual level finds its echo in the cosmic order, yet is affected by vagueries of divine intervention in Vaishnavite belief.

Buddhism
There is no classic account of beginning or end in Buddhism; Masao Abe attributes this to the absence of God.

History is embedded in the continuing process of samsara or the "beginningless and endless cycles of birth-death-rebirth". Buddhists believe there is an end to things but it is not final because they are bound to be born again. However, the writers of Mahayana Buddhist scriptures establish a specific end-time account in Buddhist tradition: this describes the return of Maitreya Buddha, who would bring about an end to the world. This constitutes one of the two major branches of Buddhist eschatology, with the other being the Sermon of the Seven Suns. End time in Buddhism could also involve a cultural eschatology covering "final things", which include the idea that Sakyamuni Buddha's dharma will also come to an end.

Maitreya
The Buddha described his teachings disappearing five thousand years from when he preached them, corresponding approximately to the year 4300 since he was born in 623 BCE. At this time, knowledge of dharma will be lost as well. The last of his relics will be gathered in Bodh Gaya and cremated. There will be a new era in which the next Buddha Maitreya will appear, but it will be preceded by the degeneration of human society. This will be a period of greed, lust, poverty, ill will, violence, murder, impiety, physical weakness, sexual depravity and societal collapse, and even the Buddha himself will be forgotten.

This will be followed by the coming of Maitreya when the teachings of dharma are forgotten. Maitreya was the first Bodhisattva around whom a cult developed, in approximately the third century CE.

The earliest known mention of Maitreya occurs in the Cakkavatti, or Sihanada Sutta in Digha Nikaya 26 of the Pali Canon. In it, Gautama Buddha predicted his teachings of dharma would be forgotten after 5,000 years. "At that period, brethren, there will arise in the world an Exalted One named Maitreya, Fully Awakened, abounding in wisdom and goodness, happy, with knowledge of the worlds, unsurpassed as a guide to mortals willing to be led, a teacher for gods and men, an Exalted One, a Buddha, even as I am now. He, by himself, will thoroughly know and see, as it were face to face, this universe, with Its worlds of the spirits, Its Brahmas and Its Maras, and Its world of recluses and Brahmins, of princes and peoples, even as I now, by myself, thoroughly know and see them."

The text then foretells the birth of Maitreya Buddha in the city of Ketumatī in present-day Benares, whose king will be the Cakkavattī Sankha. Sankha will live in the former palace of King Mahāpanadā, and will become a renunciate who follows Maitreya.

In Mahayana Buddhism, Maitreya will attain bodhi in seven days, the minimum period, by virtue of his many lifetimes of preparation. Once Buddha, he will rule over the Ketumati Pure Land, an earthly paradise sometimes associated with the Indian city of Varanasi or Benares in present-day Uttar Pradesh. In Mahayana Buddhism, the Buddha presides over a land of purity. For example, Amitabha presides over Sukhavati, more popularly known as the "Western Paradise".

A notable teaching he will rediscover is that of the ten non-virtuous deeds—killing, stealing, sexual misconduct, lying, divisive speech, abusive speech, idle speech, covetousness, harmful intent and wrong views. The ten virtuous deeds will replace them with the abandonment of each of these practices. Edward Conze in his Buddhist Scriptures (1959) gives an account of Maitreya: "The Lord replied, 'Maitreya, the best of men, will then leave the Tushita heavens and go for his last rebirth. As soon as he is born he will walk seven steps forward, and where he puts down his feet a jewel or a lotus will spring up. He will raise his eyes to the ten directions and will speak these words: 'This is my last birth. There will be no rebirth after this one. Never will I come back here, but, all pure, I shall win Nirvana.''" Maitreya currently resides in Tushita, but will come to Jambudvipa when needed most as successor to the historic Śākyamuni Buddha. Maitreya will achieve complete enlightenment during his lifetime, and following this reawakening he will bring back the timeless teaching of dharma to this plane and rediscover enlightenment. The Arya Maitreya Mandala, founded in 1933 by Lama Anagarika Govinda, is based on the idea of Maitreya.

Maitreya eschatology forms the central canon of the White Lotus Society, a religious and political movement which emerged in Yuan China. It later branched into the Chinese underground criminal organization known as the Triads, which exist today as an international underground criminal network.

Note that no description of Maitreya occurs in any other sutta in the canon, casting doubt as to the authenticity of the scripture. In addition, sermons of the Buddha normally are in response to a question, or in a specific context, but this sutta has a beginning and an ending, and its content is quite different from the others. This has led some to conclude that the whole sutta is apocryphal, or tampered with.

Sermon of the Seven Suns
In his "Sermon of the Seven Suns" in the Pali Canon, the Buddha describes the ultimate fate of the Earth in an apocalypse characterized by the consequent appearance of seven suns in the sky, each causing progressive ruin until the planet is destroyed: "All things are impermanent, all aspects of existence are unstable and non-eternal. Beings will become so weary and disgusted with the constituent things that they will seek emancipation from them more quickly. There will come a season, O monks when, after hundreds of thousands of years, rains will cease. All seedlings, all vegetation, all plants, grasses and trees will dry up and cease to be....There comes another season after a great lapse of time when a second sun will appear. Now all brooks and ponds will dry up, vanish, cease to be."

The canon goes on to describe the progressive destruction of each sun. The third sun will dry the Ganges River and other rivers, whilst the fourth will cause the lakes to evaporate; the fifth will dry the oceans. Later: "Again after a vast period of time a sixth sun will appear, and it will bake the Earth even as a pot is baked by a potter. All the mountains will reek and send up clouds of smoke. After another great interval a seventh sun will appear and the Earth will blaze with fire until it becomes one mass of flame. The mountains will be consumed, a spark will be carried on the wind and go to the worlds of God....Thus, monks, all things will burn, perish and exist no more except those who have seen the path."

The sermon completes with the Earth immersed into an extensive holocaust. The Pali Canon does not indicate when this will happen relative to Maitreya.

Norse mythology
Norse mythology depicts the end of days as Ragnarök, an Old Norse term translatable as "twilight of the gods". It will be heralded by a devastation known as Fimbulvetr which will seize Midgard in cold and darkness. The sun and moon will disappear from the sky, and poison will fill the air. The dead will rise from the ground and there will be widespread despair.

Then there will be a battle between—on the one hand—the Gods with the Æsir, Vanir and Einherjar, led by Odin, and—on the other hand—forces of Chaos, including the fire giants and jötunn, led by Loki. In the fighting Odin will be swallowed whole by his old nemesis Fenrir. The god Freyr fights Surtr but loses. Víðarr, son of Odin, will then avenge his father by ripping Fenrir's jaws apart and stabbing the wolf in the heart with his spear. The serpent Jörmungandr will open its gaping maw and be met in combat by Thor. Thor, also a son of Odin, will defeat the serpent, only to take nine steps afterwards before collapsing in his own death.

After this people will flee their homes as the sun blackens and the earth sinks into the sea. The stars will vanish, steam will rise, and flames will touch the heavens. This conflict will result in the deaths of most of the major Gods and forces of Chaos. Finally, Surtr will fling fire across the nine worlds. The ocean will then completely submerge Midgard.

After the cataclysm, the world will resurface new and fertile, and the surviving Gods will meet. Baldr, another son of Odin, will be reborn in the new world, according to Völuspá. The two human survivors, Líf and Lífþrasir, will then repopulate this new earth.

Taoism
The Taoist faith is not concerned with what came before or after life, knowing only their own being in the Tao. The philosophy is that people come and go, just like mountains, trees and stars, but Tao will go on for time immemorial.

Analogies in science and philosophy

Researchers in futures studies and transhumanists investigate how the accelerating rate of scientific progress may lead to a "technological singularity" in the future that would profoundly and unpredictably change the course of human history, and result in Homo sapiens no longer being the dominant life form on Earth.

Occasionally the term "physical eschatology" is applied to the long-term predictions of astrophysics about the future of Earth and ultimate fate of the universe. In approximately 6 billion years, the Sun will turn into a red giant. Life on Earth will become impossible due to a rise in temperature long before the planet is possibly actually swallowed up by the Sun or left charred. Later, the Sun will become a white dwarf.

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Eschatology


text:
Talk:Emma Goldman

"Influenced" list underpopulated?
Seems like it. I bet there are more recent anarchist writers (as in from around her death to today or so) who cite her as an influence. Sadly, I'm not exactly some scholar on anarchism. I was able to think of Bookchin, though. VintageVernacular (talk) 18:58, 13 March 2023 (UTC)
 * @VintageVernacular, please see the instructions at Template:infobox philosopher. It says Entries in influences, influenced, and notable ideas should be explained in the main text of one of the articles. Those that are not mentioned in the main text may be deleted. Schazjmd   (talk)  19:09, 13 March 2023 (UTC)
 * The template also states "only add entries which are explained and cited in the body of the article (or cited here)", suggesting that those who are added to the influenced list and cited may be included. Noe Ito is currently included and mentioned only in the infobox, with a citation. : 3 F4U (they/it) 20:05, 16 March 2023 (UTC)

Nursing and my edits to the "Inciting to riot" section
I performed some edits tonight to the "Inciting to riot" section of the article. Most of the edits were copyediting; however, I also edited the statement that she studied medicine when, in fact, most WP:RS (which I added to support my edit) state that she in fact informally studied nursing in prison, which, while having some overlap with medicine, is distinct.Wikipedialuva (talk) 03:51, 20 June 2023 (UTC)

title: Talk:Emma Goldman