Conversation so far:
What is one recurrent theme mentioned?
CANNOTANSWER.
Are there any other interesting aspects about this article?
In several of Plato's dialogues, Socrates promulgates the idea that knowledge is a matter of recollection.
Is there more to that idea?
He maintains this view somewhat at his own expense, because in many dialogues, Socrates complains of his forgetfulness.

Question: What other beliefs did he have?
Self-contained rewrite: What other beliefs did Plato have besides recurrent dreams?