(Re)writing commentaries: Alexander on Metaphysics v 2 and Simplicius on Physics II 3

This article presents and analyses new evidence for how Simplicius made use of Alexander of Aphrodisias for his commentary on Aristotle's Physics. Alexander's commentary on the Physics is lost to us (except for scholia on Physics IV-VIII), but, as argued in section II of this article, we have a slightly abridged version of Alexander's commentary on Physics II 3 in the form of his commentary on Metaphysics V 2 (Aristotle's Physics II 3 and Metaph. V 2 are more or less identical). This allows a comparison of Alexander's and Simplicius' commentaries on the same Aristotelian text. In section III, it is shown that Simplicius relies much more extensively on Alexander than his explicit references indicate. In section IV, it is shown that (a) when Simplicius refers to Alexander disapprovingly, he reports reliably what Alexander said, but that (b) when Simplicius refers to Alexander approvingly and as an authority in support of his own view, he provides a tendentious interpretation of Alexander's argument. My results help to evaluate Simplicius' reliability as a witness to the many works of ancient philosophy for which he is our only source.