If you look at national economies today, for example, the American economy, the European economy, the Indians, the Chinese, we're all tied together. If one of them sinks, the rest are going to sink with them and if one floats, the rest are lifted up. I find that very interesting.

The thinking is that we started evolving language not by speaking but by gesturing.

When we are bad, we are worse than any primate that I know. And when we are good, we are actually better and more altruistic than any primate that I know.

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

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

Empathy probably started out as a mechanism to improve maternal care. Mammalian mothers who were attentive to their young's needs were more likely to rear successful offspring.

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