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

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

The more self-aware an animal is, the more empathetic it tends to be.

Religion may have become a codification of morality, and it may fortify it, but it's not the origin of it.

We are territorial, power-hungry and even more brutal than chimpanzees.

A chimpanzee who is really gearing up for a fight doesn't waste time with gestures but just goes ahead and attacks.

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