Man has survived by the cunning of his brain, we are told, and that is true. But first among the products of that cunning brain has been the knowledge that by himself he is the most helpless and pitiful of creatures, while standing together and forming societies and developing moralities, he is master of the world. He has not yet learned that lesson entirely; he has learned it only for his own nation. Therefore he takes the highest skill of his hand and the subtlest wit of his brain, and uses them to manufacture poison gases. At the present hour he is painfully realizing that his poison formulas all become known to the tribes whom he calls his enemies, and so it is his own destruction he is engaged in contriving. In other words, man has come to a time when his mechanical skill, his mastery over the forces of nature, has developed more rapidly than his moral sense and his imaginative sympathy. His ability to destroy life has become dangerously greater than his desire to preserve it. So he confronts the fair face of nature as an insane creature, wrecking not merely everything that he himself has built up, but everything that nature has built in the ages before him. He is striving now with infinite agony to make this fact real to himself, and to mend his evil ways; and the first step in that process is to root out from his mind the devil's doctrine which in his blindness and greed he has himself implanted, that there is any way for him to find real happiness, or to make any worth while progress on this earth, by the method of inflicting misery and torment upon his fellow men. CHAPTER V NATURE AND MAN (Attempts to show how man has taken control of nature, and is carrying on her processes and improving upon them.) If the argument of the preceding chapter is sound, human morality is not a fixed and eternal set of laws, but is, like everything else in the world, a product of natural evolution. We can trace the history of it, just as we trace the story of the rocks. It is not a mysterious or supernatural thing, it is simply the reaction of man to his environment, and more especially to his fellow men. The source of it is that same inner impulse, that love of life, that joy in growing, that faith which appears to be the soul of all being.