If you do microcredit with men, they tend to quickly drink it. They don't pay you back.

Some people actually do not like animals - hard for me to understand, but true.

You have to really care about what you say. And if you don't, it will never come out quite right, unless you go into acting, in which case you have to act fast before you realize it is something which you do not believe in.

If everybody on the planet today had the same standard of living as the average European or American, we would need three new planets. But we don't even have one new planet. We have this one, and with the way we're polluting it, the shrinking water resources, the climate change, the experimentation with plants... the outlook is grim.

It was both fascinating and appalling to learn that chimpanzees were capable of hostile and territorial behavior that was not unlike certain forms of primitive human warfare.

What makes us human, I think, is an ability to ask questions, a consequence of our sophisticated spoken language.

Chimps are brutal, and it is so deliberate. The males go out and get near the boundary of their territory. And they walk very silently trying hard not to make any noise. They will climb into a tree and stare out over hostile territory for hours. They are waiting for the right opportunity. And then they attack.