Aristotle's Theory of Material Substance

by Gad Freudenthal

This book offers an original account of one of Aristotle's central doctrines, his theory of material substance. Gad Freudenthal argues that Aristotle's concept of heat is a crucial but hitherto ignored part of this account. Aristotle's 'canonical', four-element theory of matter fails to explain the coming-to-be of material substances (the way matter becomes organised) and their persistence (why substances do not disintegrate into their components). Interpreters have highlighted Aristotle's claim that soul is the active cause of the coming-to-be and persistence of living beings. Dr Freudenthal draws on dispersed remarks in Aristotle's writings, to argue that Aristotle in parallel also draws on a comprehensive 'naturalistic' theory, which accounts for material persistence through the concepts of heat, specifically vital heat, and connate pneuma. This theory, which bears also on the higher soul-functions, is central in Aristotle's understanding of the relationship between matter and form,