"I don't understand why we have to be so destructive. Why can't we learn to live in harmony with nature?"

"We need to reconnect with nature. We need to remember that we are part of it, not separate from it."

"The greatest lesson I learned from the chimpanzees is that we are not so different from them."

"We have so far to go to realize our human potential for compassion, altruism, and love."

"I think the most important thing is to keep active and to hope that your mind stays active."