It's up to us to save the world for tomorrow: it's up to you and me.

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

If you work hard and be persistent, you will achieve whatever you want to do.

When I go back to Gombe it's to be in that timeless world where it's soft and where life is entwined and you actually see the pattern of nature. I always feel this great spiritual power which I believe is around.

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.

It made me feel particularly sickened to know that this kind of callous attitude toward animals is repeated again and again in laboratories around this country.

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.