Chapter 2.

Let us begin with a first approximation to the real state of the case, or a broad view, which, though it may require corrections, will serve at once to illustrate and to start the subject. We may divide knowledge, then, into natural and supernatural. Some knowledge, of course, is both at once; for the moment let us put this circumstance aside, and view these two fields of knowledge in themselves, and as distinct from each other in idea. By nature is meant, I suppose, that vast system of things, taken as a whole, of which we are cognizant by means of our natural powers. By the supernatural world is meant that still more marvellous