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

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.

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.

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?

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.

Aggressiveness is the principal guarantor of survival.

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