In this article, I examine anew the moral philosophy of Immanuel Kant and its contributions to educational theory. I make four claims. First, that Kant should be read as having the Categorical Imperative develop out of subjective maxims. Second, that moral self-perfection is the aim of moral education. Third, that moral self-perfection develops by children habituating the results of their moral maxims in scenarios and cases. Fourth, that character and culture, Kant's highest aims for humanity, are the ultimate beneficiaries of this process.