In the final chapter of the Tractactus Theologico-Politicus, Spinoza declares that “the purpose of the state is, in reality, freedom.” While this remark obviously purports to tell us something important about Spinoza’s conception of the civitas, it is not clear exactly what is revealed. Recently, a number of scholars have interpreted this passage in a way that supports the view that Spinoza was a liberal for whom civic norms are rather more modest than the freedom of the Ethics. Against this view, I provide an interpretation of Spinoza’s account of civil liberation that enables us to view the political writings as an extension of his larger ethical enterprise. Specifically, I show that, according to Spinoza, the state can promote robust liberty in a variety of ways, not least by influencing the behavioral patterns and affective dispositions of its citizens.