Animals have personalities and minds and emotions.

I think anything is better than war. The extent to which one can negotiate with fanatics, I have no idea. I don't know.

there have been too many events in my life, and in the lives of my friends, which have defied any kind of scientific explanation. Science does not have appropriate tools for the dissection of the spirit.

I am living in the Africa I have always longed for, always felt stirring in my blood.

In a very unscientific statement, I feel that there's been a disconnect between this clever brain and the heart.

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 the most important thing is to keep active, and to hope that your mind stays active.