Chimps act the way they feel unless they are afraid of reprisal if they do so. But that doesn't apply to humans.

I always loved animals. And when I was ten, I decided I had to go to Africa and live with animals and write books about them.

We, as humans, have actually developed a sense of social responsibility. We have gone beyond our basic instincts. We can and we do. This is what sets us apart from the chimps. They are extremely brutal and hostile. Your next door neighbor is to be killed unless she is a juicy young female, who hasn't yet had her first baby, in which case you want her.

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.

We now know that the structure of the DNA in humans and chimpanzees differs by only just over one percent. You could even have a blood transfusion from a chimp, provided you have the same blood group.

In a very unscientific statement, I feel that there's been a disconnect between this clever brain and the heart.

One thing I had learned from watching chimpanzees with their infants is that having a child should be fun.