Atlantis

From Greer:

According to the mimeographed lessons I studied back in the day, as it became clear that Atlantean technology had the potential to bring about terrifying blowback, the Atlanteans divided into two factions: the Children of the Law of One, who took the warnings seriously and tried to get the rest of Atlantean society to do so, and the Servants of the Dark Face, who dismissed the whole issue—I don’t know for a fact that these latter went around saying “I’m sure the priests of the Sun Temple will think of something,” “orichalcum will always be with us,” “the ice age wasn’t ended by an ice shortage,” and the like, but it seems likely.

First Inundation . . . the shock managed to convince a lot of Atlanteans that the Children of the Law of One had a point . . . immediate memories of the Inundation faded . . . and went back to their old habits . . . Second Inundation . . . Children of the Law of One were marginalized even further . . . years between the Second Inundation and the Third and last one, so the story goes, Atlantis was for all practical purposes a madhouse with the inmates in charge . . . Children of the Law of One . . . sailed off to distant lands to become the seedbearers of the new age of the world.

From Wiki:

Plato borrowed some of his allegories and metaphors from older traditions, most notably the story of Gyges,^[7] causing some scholars to investigate possible inspiration of Atlantis from Egyptian records of the Thera eruption, the Sea Peoples invasion, or the Trojan War.^[8][9][10]

The early Christian apologist writer Arnobius also believed Atlantis once existed but blamed its destruction on pagans.^[47]

Early influential literature

The term "utopia" (from "no place") was coined by Sir Thomas More in Utopia, his 16th Century work of fiction.^[54] Inspired by Plato's Atlantis and travelers' accounts of the Americas, More described an imaginary land set in the New World.^[55] His idealistic vision established a connection between the Americas and utopian societies, a theme which was further solidified by Sir Francis Bacon in The New Atlantis (c. 1623).^[53] Bacon describes a utopian society that he called "Bensalem," located off the western coast of America. A character in the narrative gives a history of Atlantis that is similar to Plato's and places Atlantis in America. People had begun believing that the Mayan and Aztec ruins could possibly be the remnants of Atlantis.^[54]

Impact of Mayanism

The Europeans believed the indigenous people to be inferior and incapable of building that which was now in ruins and by sharing a common history they insinuate that another race must have been responsible.

Ignatius Donnelly

The 1882 publication of Atlantis: the Antediluvian World

. . . attempted to establish that all known ancient civilizations were descended from Atlantis . . . parallels between creation stories in the Old and New Worlds, attributing the connections to Atlantis, where he believed existed the Biblical Garden of Eden.^[59] As implied by the title of his book, he also believed that Atlantis was destroyed by the Great Flood mentioned in the Bible.

Madame Blavatsky and the Theosophists

 Blavatsky took up Donnelly's interpretations when she wrote The Secret Doctrine (1888), which she claimed was originally dictated in Atlantis itself . . . Atlanteans were cultural heroes . . . racial evolution (as opposed to primate evolution), in which the Atlanteans were the fourth "Root Race", succeeded by the fifth and most superior "Aryan race" (her own race).^[54]

...destroyed itself through internal warfare brought about by the inhabitants' dangerous use of psychic and supernatural powers

Atlantis in Popular Culture wiki

In The Sandman: Brief Lives, by writer Neil Gaiman, a chapter called "The People Who Remember Atlantis" speaks of "echo-Atlantises" and (many) other equatable prehistoric civilizations, and explores the theme of the bulk of human history and knowledge being lost to the modern world.

Plato's Timaeus

There were of old, he said, great and marvellous actions of the Athenian city, which have passed into oblivion through lapse of time and the destruction of mankind, and one in particular, greater than all the rest.

he began to tell about the most ancient things in our part of the world-about Phoroneus, who is called "the first man," and about Niobe; and after the Deluge, of the survival of Deucalion and Pyrrha;... There have been, and will be again, many destructions of mankind arising out of many causes; the greatest have been brought about by the agencies of fire and water,... once upon a time Paethon, the son of Helios, having yoked the steeds in his father's chariot, because he was not able to drive them in the path of his father, burnt up all that was upon the earth, and was himself destroyed by a thunderbolt... 

 you do not know that there formerly dwelt in your land the fairest and noblest race of men which ever lived, and that you and your whole city are descended from a small seed or remnant of them which survived. And this was unknown to you, because, for many generations, the survivors of that destruction died, leaving no written word.

Now in this island of Atlantis there was a great and wonderful empire which had rule over the whole island and several others,... But afterwards there occurred violent earthquakes and floods; and in a single day and night of misfortune all your warlike men in a body sank into the earth, and the island of Atlantis in like manner disappeared in the depths of the sea.