  In this manner, psychic activities that involve a relationship with external objects (such as sense-perception) presuppose a dialectic relationship between the soul’s essence and the multiplicity of powers it deploys: the individual and immaterial entity “soul” goes out of itself to grasp enmattered items, before going back (literally “converting”, epistrephein) in order to compare the data thus aggregated to (stable) Forms, which lend it intelligibility. As a result, 