Renowned for his metaphysics, Spinoza made significant contributions to understanding the human mind, the emotions, moral philosophy, and political philosophy. Beginning with an overview of Spinoza's life, Michael Della Rocca carefully unpacks and explains Spinoza's philosophy: his metaphysics of substance and argument at the center of his whole system that God is the sole independent substance; his account of the human mind and its relation to the body; his theory that human beings tend towards self-preservation and his most famous work, the Ethics, including the problem of free will; and his writings on the state, religion and scripture. Della Rocca concludes with a chapter on Spinoza's legacy and how modern philosophers, Hume, Hegel, and Nietzsche, responded to Spinoza's challenge. Ideal for those coming to Spinoza for the first time as well as those already acquainted with his thought, Spinoza is essential reading for anyone studying philosophy.