Abstract

I find in Kant two distinct conceptions of the priority of practical over theoretical reason, focused on belief and on action. The former actually involves a higher priority of theoretical reason. The latter, in contrast, gives genuine priority to practical reason by noting that theoretical considerations are irrelevant in moral decision-making. I argue that the former conception requires one to abandon genuine priority of the practical, while the latter conception requires one to abandon the necessary unity of reason. I also assess the work of two contemporary Kantian moral theorists, Christine Korsgaard and Onora O'Neill who utilize Kant's unofficial conception.