Being in touch with the natural world is crucial.

The nature of human beings is that they'd far rather face the disaster that is happening tonight than the one that is happening tomorrow.

If we were all to reduce our demands for energy, it would make an enormous amount of difference.

They always mean beautiful things like hummingbirds. I always reply by saying that I think of a little child in east Africa with a worm burrowing through his eyeball. The worm cannot live in any other way, except by burrowing through eyeballs. I find that hard to reconcile with the notion of a divine and benevolent creator.

I don't think we are going to become extinct. We're very clever and extremely resourceful - and we will find ways of preserving ourselves, of that I'm sure. But whether our lives will be as rich as they are now is another question.

You'll find people where their conditions aren't changing in any way, its rather rare for them to be happy.

I'm against this huge globalisation on the basis of economic advantage.