I think science and religion should be separate.

I think it's a big mistake to decide too soon what you're going to do with your life.

Unfortunately the global warming hysteria, as I see it, is driven by politics more than by science.

When World War II came along, which was when I was a teenager, we all expected we would have anthrax bombs and this kind of stuff. We thought it would be a biological war. Fortunately it wasn't and, but it's because the danger is still there and by some miracle we escaped all that, so you never can tell what it going to happen, but biology certainly could be even worse than physics and chemistry.

That's, of course, the beautiful thing about science - that it's all about things we don't understand, not just the things we do understand.

The world is just - it's wonderful when you look at all the detail. It's just amazing. Nothing is boring if you look at it carefully.

If you go to London now, not everything is beautiful, but it's amazingly better than it was. And the Thames is certainly a lot better: There are fish in the Thames.