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

Louis [Leakey] was anxious to initiate a scientific study of these chimpanzees. It would be difficult, he emphasized, for nothing was known; there were no guidelines for such a field study; and the habitat was remote and rugged. Dangerous wild animals would be living there, and chimpanzees themselves were considered at least four times stronger than humans. I remember wondering what kind of scientist he would find for such a herculean task.

I think we must cling to the hope that we can see in the great heroism, the bravery of the firemen and policemen, and the outpouring of caring and concern that has come pouring in from around the world.

To me, trees are living beings and they have their own sort of personalities.

One individual cannot possible make a difference, alone. It is individual efforts, collectively, that makes a noticeable difference - all the difference in the world!

You may not believe in evolution, and that is all right. How we humans came to be the way we are is far less important than how we should act now to get out of the mess we have made for ourselves.

Especially now when views are becoming more polarized, we must work to understand each other across political, religious and national boundaries.