Critias

Context:

While not explicitly named as a separate work, the character Critias from Plato's dialogue is discussed as the figure who tells the Atlantis story and has to explain how he alone knows about it when nobody else has heard of it. The Critias dialogue is the companion piece to the Timaeus containing Plato's extended description of Atlantis.

Context:

Discussed as the second dialogue by Plato about Atlantis - 'we then move on to the second dialogue which is actually called Critias where we get back to it'