The mysterious preamble to Timaeus contains the first account in literature of Atlantis, while the fragmentary Critias, unfinished by its author, expounds the nature of the lost continent's ideal society.
^Timaeus And Critias. Translated With Introductions By Desmond Lee. [penguin Classics]. Penguin Books. 1977., Penguin Group. Newegg. ISBN 9780140442618 (revised Nov 2016)