it on an appeal to moral feeling, nor yet on a petitio principii, under its fine modern name of an “absolute Postulate.” It is formed rather of a very subtle process of thought, which he twice advances, on p.

17 and p. 51 (R., p. 22, and p. 46), and which I shall now proceed to make clear.

Kant, be it observed, ridiculed all empirical stimuli of the will, and began by removing everything, whether subjective or objective, on which a law determining the will's action could be empirically based. The consequence is, that he has nothing left for the substance of his law but simply its Form. Now this can only be the abstract conception of lawfulness. But the conception of lawfulness is built up out of what is valid for all persons equally. Therefore the substance of the law