If we do not do something to help these creatures, we make a mockery of the whole concept of justice.

Even when it comes to things like wars over oil, which may seem like a whole different ball game, there are still comparisons one can draw: chimps fight for their territory; they fight for the resources within that territory, so it does relate in a way.

What makes us human, I think, is an ability to ask questions, a consequence of our sophisticated spoken language.

If plants could be credited with reasoning powers, we would marvel at the imaginative ways they bribe or ensnare other creatures to carry out their wishes.

Of course animals have a personality and emotions.

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

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.