Thus we come to the analysis of the four different clays of which the body of man is composed. The first clay comes from the mineral kingdom. Rocks and mountains were made first; trees and plants came afterwards; and the third process was that the same substance which first was rock and mountain and then became tree and plant, afterwards became still more living and manifested in the form of animals and birds; and it is from this same substance that the body of man was made. It is as if God had made a clay for man which was first dense in the form of a rock and in the form of a tree, then less dense in the form of an animal, until it was made still finer so that in the fourth stage it might become the substance for the body of man.