After World War II it was decided that, in order to prevent the Germans and the French from having another war, it would be better to tie them together into one economic pact so they would invest in each other and have mutual stakes. Until now, that has worked to prevent warfare between the two.

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

Humanity is actually much more cooperative and empathic than [it's] given credit for.

Competitiveness is just as much a part of our nature as empathy. The ideal, in my view, is a democratic system with a social market economy, because it takes both tendencies into account.

Armies are a purely human invention. Most soldiers who go to war nowadays don't even do it because they're inherently aggressive.

In Africa, we have the bush meat trade, which means that, on a very large scale, animals are being killed in the forests and sold in the cities as a luxury food.

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.