the sound, the lungs to the atmosphere, the fin to the water, the wing to the air. We have no difficulty in acknowledging the reality of the natural world, because it is cognized by the senses set in the body. It is a corporeal organism perceived by the corporeal senses. To complete our understanding, to advance at all, we must introduce the other factor of a real, spiritual world. Introducing this term need suggest nothing vague, evanescent, or strange. A common-sense view of it will make it both real and already quite familiar. The spiritual world is the world of man's spirit, or of the world proper to it. Its evidences are of daily experience, for as to our spirits we are ever inhabitants of that world, deriving from it our thoughts, affections, states of mind, and life. Nor could the spirit be an occupant of any other.
We can distinguish the faculties of
