Natural selection deals ruthlessly with any population, bird or beaver, which fails to solve the problems of its environment with all those resources, learned or unlearned, which may be at its disposal.

Human war has been the most successful of our cultural traditions.

The city is a cultural invention enforcing on the citizen knowledge of his own nature. And this we do not like. That we are aggressive beings, easily given to violence; that we get along together because we must more than because we want to, and that the brotherhood of man is about as far from reality today as it was two thousand years ago; that reason's realm is small; that we never have been and never shall be created equal; that if the human being is perfectible, he has so far exhibited few symptoms - all are considerations of man from which space tends to protect us.

Natural selection deals ruthlessly with any population, bird or beaver, which fails to solve the problems of its environment with all those resources, learned or unlearned, which may be at its disposal.

The miracle of man is not how far he has sunk but how magnificently he has risen. We are known among the stars by our poems, not our corpses.

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

If you watch lizards and lions copulating, then you will see that in 200 million years the male has not had a single new idea.