We are by far the most contradictory of all primates. An animal with this much internal conflict has never lived on this earth.

There is little evidence that other animals judge the appropriateness of actions that do not directly affect themselves.

Bonobo studies started in the '70s and came to fruition in the '80s. Then in the '90s, all of a sudden, boom, they ended because of the warfare in the Congo. It was really bad for the bonobo and ironic that people with their warfare were preventing us from studying the hippies of the primate world.

Socialism cannot function, because its economic reward structure is contrary to human nature.

When it comes to social interaction, the chimpanzees appear to be just as intelligent as we are.

The role of inequity in society is grossly underestimated. Inequity is not good for your health, basically.

The hamadryas baboon is a harem holder where one male mates with multiple females.