Words can enhance experience, but they can also take so much away. We see an insect and at once we abstract certain characteristics and classify it - a fly. And in that very cognitive exercise, part of the wonder is gone. Once we have labeled the things around us we do not bother to look at them so carefully. Words are part of our rational selves, and to abandon them for a while is to give freer reign to our intuitive selves.

The greatest danger to our future is apathy.

Chimps are far too much human to be my favorite animal.

Even in chimps there is true altruistic behaviour; behaviour that doesn't fit into the sociobiological model that says you either help a close relative and thereby your own genes, or you help somebody else now in return for their help in the future. When a very high-ranking male chimpanzee rescues a little orphan, saving his life, that kind of explanation doesn't work.

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.

If you consciously say 'I won't do it!' to yourself, then you have a good chance that you won't.

We could change the world tomorrow if all the millions of people around the world acted the way they believe.