I think the most important thing is to keep active, and to hope that your mind stays active.

Anyone who tries to improve the lives of animals invariably comes in for criticism from those who believe such efforts are misplaced in a world of suffering humanity.

Terrorism is usually fueled by poverty, and the fanatical faith of the terrorists who truly believe that the more people they kill who do not subscribe to their faith, the greater their reward in heaven.

Every individual can make a difference every day by making conscious choices.

The awful thing is we don't respect each other.

We are unique. Chimpanzees are unique. Dogs are unique. But we humans are just not as different as we used to think.

Chimpanzees have given me so much. The long hours spent with them in the forest have enriched my life beyond measure. What I have learned from them has shaped my understanding of human behavior, of our place in nature.