 Plato famously illustrates the doctrine with an exchange between Socrates and a young slave, in which Socrates guides the slave from ignorance to mathematical knowledge. The slave’s experiences, in the form of Socrates’ questions and illustrations, are the occasion for his recollection of what he learned previously. Plato’s metaphysics provides additional support for the Innate Knowledge Thesis. Since our knowledge is of abstract, eternal Forms, which clearly lie beyond our sensory experience, it is independent, for its justification, of experience.