It's the bond between mother and child, which is really for us and for chimps and other primates, the root of all the expressions of social behavior.

War had always seemed to me to be a purely human behavior. Accounts of warlike behavior date back to the very first written records of human history; it seemed to be an almost universal characteristic of human groups.

It is these undeniable qualities of human love and compassion and self-sacrifice that give me hope for the future. We are, indeed, often cruel and evil. Nobody can deny this. We gang up on each one another, we torture each other, with words as well as deeds, we fight, we kill. But we are also capable of the most noble, generous, and heroic behavior.

As a child, we couldn't afford holidays overseas, so instead I travelled through books. I was inspired by Dr Dolittle and Tarzan.

Be assured that our individual actions, collectively, make a huge difference.

We have the choice to use the gift of our life to make the world a better place--or not to bother

Here we are, the most clever species ever to have lived. So how is it we can destroy the only planet we have?