Il concetto di ousia nel pensiero metafisico e cosmologico di Posidonio: alcune considerazioni su F 92 e 96 EK (= 267 e 268 Th.)

The paper deals with Posidonius' notion of metaphysical substance meant both as individual substance and universal matter; analogies with, and difformities from Stoic metaphysics, with particular attention to Chrysippus' theory of individual, are delineated, as well as the relation of Stoic and Posidonian idea of change to Aristotelian theory of generation.