Aggressiveness is the principal guarantor of survival.

Is it possible that the environmental severity of the 1930s induced-particularly in the most aware, alert, and compassionate of [British] men-a morality which makes no sense today?

We may agree, for example, that our societies must provide greater security for the individual; yet if all we succeed in producing is a providing increased anonymity and ever increasing boredom, then we should not wonder if ingenious man turns to such amusements as drugs, housebreaking, vandalism, mayhem, riots, or - at the most harmless - strange haircuts, costumes, standards of cleanliness, and sexual experiments.

We are born of risen apes, not fallen angels.

Sex is a sideshow in the world of the animal, for the dominant color of that world is fear.

For the soundest of evolutionary reasons man appears at his best when times are worst.

Not in innocence, and not in Asia, was mankind born. The home of our fathers was that African highland reaching north from the Cape to the Lakes of the Nile. Here we came about-slowly, ever so slowly-on a sky-swept savannah glowing with menace.