Critias

Critias is one of Plato's late dialogues. It describes   the island kingdom Atlantis and its attempt to conquer Athens. Critias is the second of a projected trilogy of dialogues, preceded by Timaeus.

Timaeus

Timaeus is one of Plato's dialogues, mostly in the form of a long monologue given by the title character Timaeus of Locri, written c. 360 BCE.  It is most noted for its references to the Lost Continent of Atlantis.

Ayn Rand's Anthem

Anthem is a dystopian fiction novella by Ayn Rand, written in 1937 and first published in 1938 in England. It takes place at some unspecified future date when mankind has entered another dark age.