Being evil is something that only humans are capable of.

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

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.

People say, "Oh, we ought to fight for animal rights." We fought for human rights, but even if humans have rights, they can still be horribly abused and are every day. You don't have to go to some far off land, far away place; we have a lot of child abuse in our own society.

When I began in 1960, individuality wasn't an accepted thing to look for; it was about species-specific behaviour. But animal behaviour is not hard science. There's room for intuition.

There would be very little point in my exhausting myself and other conservationists themselves in trying to protect animals and habitats if we weren't at the same time raising young people to be better stewards.

It's the bond between mother and child, which is really for us and for chimps and other primates, the root of all the expressions of social behavior.