"Peter Winchs depth as a philosopher comes out in the depth of his engagement with Spinoza. Spinozas ethical concerns resonated with Winchs own; and his lectures are wonderfully expressive of how he saw philosophy itself. Winchs discussions of the complex relation between Descartess philosophy and that of Spinoza are among the most valuable features of this fine book." Cora Diamond, Kenan Professor Of Philosophy Emerita, Department of Philosophy, University of Virginia This book makes available lectures and seminars on Spinoza that Peter Winch gave in the eighties, at Swansea and then at Kings College London. There are six chapters and the volume contains a substantial essay by David Cockburn, Winch, Spinoza, and the Human Body, in which he reflects on the lectures and on the conceptual difficulties of Spinozas detaching the concept of body from the moorings of our common understanding which moorings would, of course, represent for Spinoza an inadequate idea. In that case, what kind of interior changes have to occur if we are to arrive at an adequate idea?a question relevant to how we assess Spinozas view of the relation between metaphysics and ethics Michael McGhee, University of Liverpool; Michael Campbell and Sarah Tropper; Philosophical Investigations 2022.