Abstract

Kant’s duty of self-knowledge demands that one know one’s heart—the quality of one’s will in relation to duty. Self-knowledge requires that an agent subvert feelings which fuel self-aggrandizing narratives and increase self-conceit; she must adopt the standpoint of the rational agent constrained by the requirements of reason in order to gain information about her moral constitution. This is not I argue, contra Nancy Sherman, in order to assess the moral goodness of her conduct. Insofar as sound moral practice requires moral self-knowledge and moral self-knowledge requires a theoretical commitment to a conception of the moral self, sound moral agency is for Kant crucially tied to theory. Kant plausibly holds that self-knowledge is a protection against moral confusion and self-deception. I conclude that although his account relies too heavily on the awareness of moral law to explain its connection to moral development, it is insightful and important in Kantian ethics.