Now the philosophy faculty consists of two departments: a department of historical knowledge (including history, geography, philology and the humanities, along with all the empirical knowledge contained in the natural sciences), and a department of pure rational knowledge (pure mathematics and pure philosophy, the metaphysics of nature and of morals). And it also studies the relation of these two divisions of learning to each other. It therefore extends to all parts of human knowledge (including, from a historical viewpoint, the teachings of the higher faculties), though there are some parts (namely, the distinctive teachings and precepts of the higher faculties) which it does not treat as its own content, but as objects it will examine and criticize for the benefit of the sciences.