Baruch Spinoza is one of the most influential and controversial political philosophers of the early modern period. Though best-known for his contributions to metaphysics, Spinoza's Theological-Political Treatise (1670) and his unfinished Political Treatise (1677) were widely debated and helped to shape the political writings of philosophers as diverse as Rousseau, Kant, Marx, Nietzsche, and (although he publicly denied it) even Locke. In addition to its enormous historical importance, Spinoza's political philosophy is also strikingly contemporary in its advocacy of toleration...