Therefore the determinations of a practical reason will be able to take place only with reference to the world of sense and hence indeed in conformity with the categories of the understanding, not however with the aim of a theoretical use of the understanding in order to bring a priori the manifold of (sensible) intuition under one consciousness, but only in order to subject a priori the manifold of desires to the unity of consciousness of a practical reason commanding in the moral law, or ie of a pure will.