There are many animal-welfare groups that sometimes seem to forget that human beings are animals too, that we need to include them in our sphere of compassion.

We can't leave people in abject poverty, so we need to raise the standard of living for 80% of the world's people, while bringing it down considerably for the 20% who are destroying our natural resources.

I have found that to love and be loved is the most empowering and exhilarating of all human emotions.

Lasting change is a series of compromises.

Here we are, the most clever species ever to have lived. So how is it we can destroy the only planet we have?

The problem of the chimps is that they can only sit and look. They can't discuss what they feel. All that feeling is trapped within each one.

In what terms should we think of these beings, nonhuman yet possessing so very many human-like characteristics? How should we treat them? Surely we should treat them with the same consideration and kindness as we show to other humans; and as we recognize human rights, so too should we recognize the rights of the great apes? Yes.