Kant’s One Self and the Appearance/Thing-in-itself Distinction

Kant’s transcendental idealism hinges on a distinction between appearances and things in themselves. The debate about how to understand this distinction has largely ignored the way that Kant applies this distinction to the self. I argue that this is a mistake, and that Kant’s acceptance of a single, unified self in both his theoretical and practical philosophy causes serious problems for the ‘two-world’ interpretation of his idealism.