This book is an introduction to the philosophy of Arthur Schopenhauer, written in a lively, personal style. Hannan emphasizes the peculiar inconsistencies and tensions in Schopenhauers thought--he was torn between idealism and realism, and between denial and affirmation of the individual will. In addition to providing a useful summary of Schopenhauers main ideas, Hannan connects Schopenhauers thought with ongoing debates in philosophy. According to Hannan, Schopenhauer was struggling half-consciously to break altogether with Kant and transcendental idealism; the anti-Kantian features of Schopenhauers thought possess the most lasting value. Hannan defends panpsychist metaphysics of will, comparing it with contemporary views according to which causal power is metaphysically basic. Hannan also defends Schopenhauers ethics of compassion against Kants ethics of pure reason, and offers friendly amendments to Schopenhauers theories of art, music, and salvation. She also illuminates the deep connection between Schopenhauer and the early Wittgenstein, as well as Schopenhauers influence on existentialism and psychoanalytic thought.