I am obstinate and I will not give in.

Chimpanzees are incredibly intelligent. They can learn more than 400 signs of American Sign Language. They have memories for spatial distribution, like numbers on a TV screen, way better than ours. You come onto the emotions: happiness, sadness, fear, and despair - all the things for which I was accused of being anthropomorphic when I ascribed them to chimpanzees.

I had never been able to believe that God would give us poor frail humans only one chance at making it -- that we would be assigned to some kind of hell because we failed during one experience of mortal life. ... So the concepts of karma and reincarnation made logical sense to me.

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 was even accused of teaching the chimps how to fish for termites which I mean that would have been such a brilliant coup.

We can learn to suppress our feelings for other reasons.

And I thought how sad it was that, for all our sophisticated intellect, for all our noble aspirations, our aggressive behavior was not just similar in many ways to that of the chimpanzees - it was even worse. Worse because human beings have the potential to rise above their baser instincts, whereas chimpanzees probably do not.