Male chimpanzees have an extraordinarily strong drive for dominance. They're constantly jockeying for position.

We justify the inequalities by saying some people are just better and smarter than others and the strong should survive and the poor can die off.

You need to indoctrinate empathy out of people in order to arrive at extreme capitalist positions.

It wasn't God who introduced us to morality; rather, it was the other way around. God was put into place to help us live the way we felt we ought to.

Male bonobos really don't fit the human male ideal.

Females avoid conflict. They are afraid of violence. The males, on the other hand, are less averse to strife. But once conflict breaks out, the males are much better at reconciling. In a study done in Finland, children who had quarreled were asked how much longer they intended to be angry at one another. The boys proudly said: "Oh, at least one or two days." The girls said "forever".

The primate laugh is given in playful contexts, and as such has a strong similarity to the human laugh.