I started as - well, I wanted to be Poet Laureate. And I wanted to be a naturalist. That's how I began. I didn't have any desire to go and be a scientist. Louis Leakey channeled me there. I'm delighted he did. I love science. I love analyzing and making sense of all these observations. So, it was the perfect rounding off of who I was into who I am.

We learn the social norms of our society and modify our behaviour accordingly.

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.

Just remember--if you are really and truly determined to work with animals, somehow, either now or later, you will find a way to do it. But you have to want it desperately, work hard, take advantage of an opportunity--and never give up.

I don't spend that much time being introspective, believe it or not. All I know is that I grew up not questioning God because that's how you are. God was there like the birds and the wind.

The Soul of Money is an inspired and utterly fascinating book. It will change the way you think about money. ... It is a book for everyone who would like to make the world a better place.

I'm always pushing for human responsibility. Given that chimpanzees and many other animals are sentient and sapient, then we should treat them with respect.