We have turned away from the natural world. Instead, it's all about money and power.

Mainly because as women's education increases all around the planet, we find that family size tends to drop.

We have a responsibility toward the other life-forms of our planet whose continued existence is threatened by the thoughtless behavior of our own human species. . . . Environmental responsibility – for if there is no God, then, obviously, it is up to us to put things right.

Chimps taught us we're not separated from the animal kingdom, we're a part of it.

It's up to us to save the world for tomorrow: it's up to you and me.

One thing I had learned from watching chimpanzees with their infants is that having a child should be fun.

Realize that change - whilst we want it to happen fast - is usually the result of a great deal of work, and often comes as a result of a series of compromises (so long as we do not compromise our values).