He explained that the men wrote of possibly divine things, as Socrates compared their work to that of a prophet. (Apology, 22c) Socrates said the poets were channeling something from within, but they had no understanding of what they had written. (Apology 22e.) Of course, Socrates does not explain the theory of recollection until the Meno. However, I thought this was an impressive start to the belief of recollection theory for Socrates.
In the Meno, Socrates begins to prepare his case for the theory of recollection. Socrates and Meno are trying to determine if virtue could be taught or if it was something we were born with. (Meno, 70a) To determine if that was possible they first tried to define virtue. Ultimately, in their quest for the answer they find themselves in a paradox. If you already believe you hold knowledge, you will not look for it, and if you do not already know you may not understand it is right in front of you. Socrates refuted this paradox through his theory of recollection. (Meno, ) Socrates believed that the ideas or knowledge we possess are not new but are something our souls learned before entering our bodies. (Meno, 86a.) Socrates found through questioning one another we could invoke these ideas, and begin to understand them (Meno, 85d.) Socrates used the example of the slave boy to show that the boy already possessed mathematical knowledge.