"The least I can do is speak out for the hundreds of chimpanzees who, right now, sit hunched, miserable and without hope, staring out with dead eyes from their metal prisons. They cannot speak for themselves."
"I think the most important thing is to keep active and to hope that your mind stays active."
"What you do makes a difference, and you have to decide what kind of difference you want to make."
"A sense of calm came over me. More and more often I found myself thinking, "This is where I belong. This is what I came into this world to do."
"I did this book 'Harvest for Hope,' and I learned so much about food. And one thing I learned is that we have the guts not of a carnivore, but of an herbivore. Herbivore guts are very long because they have to get the last bit of nutrition out of leaves and things."
"But let us not forget that human love and compassion are equally deeply rooted in our primate heritage, and in this sphere too our sensibilities are of a higher order of magnitude than those of chimpanzees."