As human beings, we can encompass a vague feeling of what the universe is, and all in this funny little brain here - so there has to be something more than just brain, it has to be something to do with spirit as well.

I think I'd like to be remembered as someone who really helped people to have a little humility and realize that we are part of the animal kingdom not separated from it.

You aren't going to save the world on your own. But you might inspire a generation of kids to save it for all of us. You would be amazed at what inspired children can do.

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

It's not Africa that is destroying the African rainforest, it's selling concessions to timber companies that are not African, they are from the developed world - Japan, America, Germany, Britain.

We have to create more and more vegetarians, and help people to understand that it is not only the suffering of the animals (which is what made me vegetarian) but also the incredible harm to the environment, the tremendous amount of greenhouse gas created by the whole vast machinery of intensive animal farming.

Science demands objective factual evidence - proof; spiritual experience is subjective and leads to faith.