Abstract
If we would have to differentiate Proclean thought in relation to Plotinian thought, perhaps the shortest way would be to understand the hyerarchic structure used by them to define the procession and the conversion from the One to the multiple. Although the ground for both thinkers is Plato’s philosophy, the concern to sistematize in an “organic” way all the levels of participation in the divine hennads leads Proclus to postulate a refined vertical system in which every reality is thought as a monad and, as such, one different from the others. The aim of this work consists in understanding the Proclean structure and its relation with thought, understood as a transfiguration in which reality, more than a manifestation of unity, is an expression of the continuous play between the One and the multiple.