Abstract

The commentary of Plato’s Gorgias by Olympiodorus of Alexandria (ca. 505-after 565) is the only ancient commentary of the dialogue that has survived. This little-known and neglected commentary is truly of historical and hermeneutical interest. Beyond its value for our understanding of late Neoplatonism, Olympiodorus’ interpretation can renew in some respects our reading of the Platonic text and can contribute to current methodological debates, as presuppositions traditionally dominant in Plato scholarship (about chronology, dialogue form, dialectic, etc.) are being increasingly questioned. This study concentrates on two fundamental theses of the commentary: (1) the unity of dramatic form and doctrinal content in the Gorgias as read in the light of the Phaedrus and the Republic, and (2) the basis of dialectical agreement (in refutation and maieutics alike), namely the « common notions (koinai ennoiai) ». The last section of this study identifies some strengths and weaknesses of Olympiodorus’ use of the Phaedrus and the Republic, and of the « common notions ».