Animals were my passion from even before I could speak apparently. When I was about 10, 11 I fell in love with Tarzan.

Empathy is really important.. Only when our clever brain and our human heart work together in harmony can we achieve our full potential.

The problem of the chimps is that they can only sit and look. They can't discuss what they feel. All that feeling is trapped within each one.

My mission is to create a world where we can live in harmony with nature. And can I do that alone? No. So there is a whole army of youth that can do it. So I suppose my mission is to reach as many of those young people as I can through my own efforts.

For those who have experienced the joy of being alone with nature there is really little need for me to say much more; for those who have not, no words of mine can ever describe the powerful, almost mystical knowledge of beauty and eternity that come, suddenly, and all unexpected.

A good mother is protective but not over-protective. She's patient, she's affectionate, she's playful, but above all she is supportive.

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.