The volumes of the Symposium Aristotelicum have become essential reference works for the study of Aristotle. In this nineteenth volume, eleven distinguished scholars of ancient philosophy provide a running commentary on the first book of Aristotle's Physics, a central treatise of the Aristotelian corpus that aims at knowledge of the principles of physical change. Along with the general introduction, the ten chapters together comment on the entirety of the Aristotelian text and discuss the philosophical issues that are raised in it in detail. Aristotle is shown to be in dialogue with the...