  About Michael of Ephesus’ life next to nothing is known. On the other hand, it is perfectly clear that his breadth as an Aristotelian commentator is remarkable. Indeed, Michael has been compared to Alexander of Aphrodisias in respect both of his mode of exposition and method of interpretation. He wrote commentaries not only on the fifth, ninth, and tenth books of the Nicomachean Ethics, but also on Metaphysics 6–14 and on the Sophistical Refutations (both wrongly attributed to Alexander), on the Generation of Animals (wrongly attributed to Philoponus), on the Parva naturalia, on the Parts of Animals, on the Movement of Animals, on the Progression of Animals; furthermore, he wrote comments on the pseudo-Aristotelian treatise De coloribus, and on the Politics, the latter of which have only partly survived.