Abstract
Recent research by scholars such as Dennis Des Chene and Roger Ariew, among others, has deepened our knowledge of the Scholastic context of Descartes's philosophy, especially his metaphysics and natural philosophy. Helen Hattab's book is a valuable addition to this literature. Her main concern is the development from explanations by Aristotelian substantial forms in late Scholastic thought to the allegedly more perspicuous explanations that characterized the new mechanistic science. More specifically, she investigates the various contexts of Descartes's rejection of substantial forms, looking behind the rhetoric of his attack to what she claims was in fact the theory he had in sight and the arguments he used ..