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

We are born of risen apes, not fallen angels..

Natural selection deals ruthlessly with any population, bird or beaver, which fails to solve the problems of its environment with all those resources….

Classic is our daring, classic our cowardice. Classic is our cruelty, classic our charity..

Men, unlike mockingbirds, have the capacity for systematic self-delusion. We echo each other with equal precision, equal eloquence, equal assurance..

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 t….

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

Aggressiveness is the principal guarantor of survival..

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 inc….

Man is a fraction of the animal world. Our history is an afterthought, no more, tacked to an infinite calendar. We are not so unique as we should lik….

The dog barking at you from behind his master's fence acts for a motive indistinguishable from that of his master when the fence was built..

A bird does not fly because it has wings; it has wings because it flies..

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..

Far from the truth lay the antique assumption that man had fathered the weapon. The weapon, instead, had fathered man..

While we pursue the unattainable, we make impossible the realizable..

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….

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..

Why is man man? As long as we have had minds to think with, stars to ponder upon, dreams to disturb us, curiosity to inspire us, hours free for medit….

What could not be denied was that in vast segments of the animal world natural selection of the most qualified individuals took place not by competit….

There is a virtue, I must presume, in shamelessness, since by placing on parade the things one does not know, one discovers that no one else knows ei….

Animal language is a contagious expression of mood effecting communication between social partners..