experience practical freedom. In this Critique, Kant’s main purpose is not to draw the reader’s attention to actual moral experience, and the First Critique does not actually explain the moral philosophy. Kant’s ultimate aim is to demonstrate how metaphysics could be possible; in doing this, he constructs his transcendental philosophy. It seems Kant does not want to go further which has led critics to argue that Kant gave an unclear exposition here and in preceding writings, thereby muddling the doctrine
But this is not the course Kant takes in the Metaphysics of Morals. The most basic aim of moral philosophy in the Second Critique and, and so also of the Groundwork, is, in Kant’s view, to ‘seek out’ the foundational principle of a ‘metaphysics of morals,’ which Kant understands as a system of a priori moral principles that apply the CI to human persons in all times and cultures. In this sense