All that man sees or thinks he sees is his own thought. Man can produce out of his thought an angel or a devil; he can produce God out of his thought. The building of the Tower of Babel is the making of the mind. Man's thought has great power; and when he comes to the realization that everything comes from one source and that everything is developing towards one goal, he begins to see that the source and the goal are God. Then the world of variety is no longer variety to him but unity; it is one.