Abstract
In this paper, we explore a selection of Castoriadis’ writings, paying special attention to the seminars devoted to Plato’s Statesman, and discuss his divorce from the Platonic and Platonic tradition. Castoriadis places Plato beyond a theoretical and academic interpretation: the Ancient Greece that Castoriadis claims, from his political ontology, is not a paradigm, but a “germ” of autonomy, by which understand the birth of democracy, philosophy and history in order to transform himself and society.