Your life matters. You can't live through a day without making an impact on the world. And what's most important is to think about the impact of your actions on the world around you.

I've got different ideas of complete happiness. But one is being by myself out in a forest, completely happy. Another is walking with a dog in some nice place. And three is sitting around preferably a fire, but not necessarily, and drinking red wine with friends and telling stories.

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

I had a wonderful teacher about animal behavior - my dog Rusty. He taught me that animals have personalities, minds, and feelings.

I cannot remember a time when I did not want to go to Africa to study animals.

Only if we understand, can we care. Only if we care, we will help. Only if we help, we shall be saved.

Of course animals have a personality and emotions.