Critias (; ), one of
Plato's late
dialogues, contains the story of the mighty island kingdom
Atlantis and its attempt to conquer
Athens, which failed due to the ordered society of the Athenians.
Critias is the second of a projected trilogy of dialogues, preceded by
Timaeus and followed by
Hermocrates. The latter was possibly never written and
Critias was left incomplete. Because of their resemblance (e.g. in terms of persons appearing), modern classicists occasionally combine both
Timaeus and
Critias as
Timaeus-Critias.