Aristotle’s view of philosophical method and the substantive conclusions he reaches by using his methods are of permanent interest. His views display both development and internal tensions; but his main line of argument is both coherent and philosophically challenging. This book explores Aristotle’s philosophical method, and the merits of his conclusions. Since a proper understanding of Aristotle’s method requires emphasis on the systematic character of his philosophy, Terence Irwin examines questions in several different areas of Aristotle’s philosophy – especially metaphysics, epistemology, philosophy of mind, and ethics – and stresses the connections between doctrines and issues that are often discussed piecemeal.