Published online by Cambridge University Press: 24 April 2017
In this article I challenge Kantian constructivism both as an interpretation of Kant's own philosophical commitments and on its own merits as a moral theory, and argue in favour of a moral realist interpretation of Kant. I do so by focusing on Kant's own religious views and the question of whether a Kantian moral theory can be religiously neutral. I show that constructivist readings have severe problems on both fronts, while realist readings of Kant do not. This provides strong evidence that realist forms of Kantian ethics are preferable both as readings of Kant and as approaches to moral theory.