The wheel of evolution is such that the consciousness gradually evolves through rock, tree, animal, to man. In man it evolves enough to seek its own way back to its eternal state of being. Man is the most active being; he has to do with a great many things. A rock has very little activity, and it lasts long; a tree has a little more activity, and its life is not so long as that of the rock. There are many animals that live much longer than man. Man has the greatest activity, and in him the consciousness reaches its highest point of manifestation. In the human race one also finds that man's face has improved at every period of evolution.