are broken up, and the material of which they are composed enters into new combinations. There is reciprocal integration and disintegration. In all compounded bodies, old cells are ceaselessly being broken up, and new cells are formed to take their place. The works of man also require to be continually renewed until they have become old and useless, when they are torn down in order that some better purpose may be served. These two processes of breaking down and building up in Nature are called death and life; in the artificial works of man they are called destruction and restoration.
This dual process, which obtains universally in things visible, also obtains universally in things invisible. As a body is built of cells, and a house of bricks, so a man’s mind is built of
