Abstract
Metaphysics 4 and 5, that is Γ and Δ, comprise two of the most important books in the Aristotelian corpus and, perhaps, in the history of philosophy. Metaphysics 4 opens with the famous line "there is a science of being qua being," while Metaphysics 5 presents Aristotle's "philosophical dictionary." As with so much of Aristotle, the ideas expressed in these books are capable of a wide range of interpretation. In Alexander's commentaries, we possess a relatively early interpretation by a sophisticated philosopher who knew well not only his Aristotle but also Aristotle's opponents and their quarrels. Thus these commentaries are not only intrinsically interesting on their own philosophical terms, but are filled with cross references within the text of Aristotle--cross references that tell us how these texts were being construed within the schools of the time--as well as arguments revealing the background of live substantive issues introduced by Aristotle and his place within late Greek philosophy. Finally, as Madigan points out in his introduction, those interested in Neoplatonism will also find these commentaries of great interest because, as Prophyry reports, they were apparently read at Plotinus's school. Indeed, Alexander himself is often thought of as a Neoplatonic commentator.