London has fine museums, the British Library is one of the greatest library institutions in the world... It's got everything you want, really.

We can now manipulate images to such an extrodinary extent that there's no lie you cannot tell.

Human beings, because we're so clever, have removed every single one of those population limiting factors... So nothing controls our increase in numbers except our own wish. Since I first started making television programs, the population of the world has increased three times. That's an extraordinary notion. Can it increase four times? Can it increase five times? The Earth is a finite size. So a point will eventually come when we run out of food, when we run out of space and when we will have destroyed most of the natural world. So ought we to do something about it before that happens?

If my grandchildren were to look at me and say, 'You were aware species were disappearing and you did nothing, you said nothing', that I think is culpable. I don't know how much more they expect me to be doing, I'd better ask them.

Since when has Finland been a rotten place to live in?

I suppose happiness is something one enjoys, but I suspect that happiness is not a state but rather a transition.

All life is related. And it enables us to construct with confidence the complex tree that represents the history of life