Hugh Eterianus, Alexander of Aphrodisias and Syllogistic Demonstrations. A Newly Discovered Fragment of Alexander of Aphrodisias’ Commentary on Aristotle Posterior Analytics

Hugh Eterianus (ca. 1110/1120-1182), an Italian theologian who worked in Byzantium as an advisor to Manuel I Comnenos, is the author of the treatise De sancto et immortali deo, where he argues against the Orthodox denial of the filioque. In this treatise, Hugh quotes from the works of Plato, Aristotle and other Greek philosophers. In chapter I, 4, Hugh includes a short passage from a certain ‘Alexander’ who commented on Aristotle’s Posterior Analytics. We show that this passage is a fragment from Alexander of Aphrodisias’ lost commentary on the Posterior Analytics. This article includes a new edition of the fragment with an English translation and a philosophical commentary.