Our ape-like and arboreal ancestors entered upon the first of many short cuts. To crack a marrow-bone with a rock was the act which fathered the tool, and between the cracking of a marrow-bone and the riding down town in an automobile lies only a difference of degree.

Man is a flux of states of consciousness, a flow of passing thoughts, each thought of self another self, a myriad thoughts, a myriad selves, a continual becoming but never being, a will-of-the-wisp flitting of ghosts in ghostland.

The hand descended. Nearer and nearer it came. It touched the ends of his upstanding hair. He shrank down under it. It followed down after him, pressing more closely against him. Shrinking, almost shivering. He still managed to hold himself together. It was a torment, this hand that touched him and violated his instinct. He could not forget in a day all the evil that had been wrought him at the hands of men.

Had the cub thought in man-fashion, he might have epitomized life as a voracious appetite, and the world as a place wherein ranged a multitude of appetites, pursuing and being pursued, hunting and being hunted, eating and being eaten, all in blindness and confusion, with violence and disorder, a chaos of gluttony and slaughter, ruled over by chance, merciless, planless, endless.

Men do not knowingly drink for the effect alcohol produces on the body. What they drink for is the brain-effect; and if it must come through the body, so much the worse for the body.

There is an ecstasy that marks the summit of life, and beyond which life cannot rise. And such is the paradox of living, this ecstasy comes when one is most alive, and it comes as a complete forgetfulness that one is alive. This ecstasy, this forgetfulness of living, comes to the artist, caught up and out of himself in a sheet of flame; it comes to the soldier, war-mad in a stricken field and refusing quarter; and it came to Buck, leading the pack, sounding the old wolf-cry, straining after the food that was alive and that fled swiftly before him through the moonlight.

I early learned that there were two natures in me. This caused me a great deal of trouble, till I worked out a philosophy of life and struck a compromise between the flesh and the spirit. Too great an ascendancy of either was to be abnormal, and since normality is almost a fetish of mine, I finally succeeded in balancing both natures. Ordinarily they are at equilibrium; yet as frequently as one is permitted to run rampant, so is the other. I have small regard for an utter brute or for an utter saint.