This essay discusses Nietzsche's tragic moral psychology and its significance for liberal political philosophy. In the essay, I sketch out what I view to be the basic features of Nietzsche's tragic psychology, which is strongly opposed to the Socratic and Stoic traditions, and I show how this perspective can be distinguished from the moral psychology that informs liberalism's position on issues such as personhood and political history. I conclude with a few suggestions for viewing Nietzsche's thought as a necessary corrective to a certain dogmatism that still inhabits liberal theory, in this way enabling liberal thought to conceptualise human nature and the human good in more creative and complex ways.