The human race is doomed to sink back farther and farther into the primitive night ere again it begins its bloody climb upward to civilization.

The marriage tie becomes possessed of a history and takes to itself traditions. This history and these traditions form a great fund, to which changing conditions and growing imagination constantly add. And the traditions, more especially, bear heavily upon the individual, overmastering his natural expression of the love instinct and forcing him to an artificial expression of that love instinct. He loves, not as his savage forbears loved, but as his group loves.

In a saturated population life is always cheap.

A man with a club [bat] is a law-maker, a man to be obeyed, but not necessarily conciliated.

Ever bike? Now that's something that makes life worth living!

He had no conscious knowledge of death, but like every animal of the Wild, he possessed the instinct of death. To him it stood as the greatest of hurts. It was the very essence of the unknown; it was the sum of the terrors of the unknown, the one culminating and unthinkable catastrophe that could happen to him, about which he knew nothing and about which he feared everything.

I am a hopeless materialist. I see the soul as nothing else than the sim of activities of the organism plus personal habits - plus inherited habits, memories, experiences, of the organism. I believe that when I am dead, I am dead. I believe that with my death I am just as much obliterated as the last mosquito you and I squashed.