This book introduces student to the three major figures of modern philosophy known as the rationalists. It is not for complete beginners, but it is an accessible account of their thought. By concerning itself with metaphysics, and in particular substance, the book relates an important historical debate largely neglected by the contemporary debates in the once again popular area of traditional metaphysics. in philosophy. (Do Not USE)Woolhouse, Roger S. is the author of 'Descartes, Spinoza, Leibniz The Concept of Substance in Seventeenth-Century Metaphysics' with ISBN 9780415090223 and ISBN 0415090229.