The climate, the economic situation, rising birth rates; none of these things give me a lot of hope or reason to be optimistic.

I just wish the world was twice as big and half of it was still unexplored.

I've been bitten by a python. Not a very big one. I was being silly, saying: 'Oh, it's not poisonous' Then, wallop! But you have fear around animals.

All the modern devices we have enable us to investigate things and have enabled us to do better.

People talk about doom-laden scenarios happening in the future: they are happening in Africa now. You can see it perfectly clearly. Periodic famines are due to too many people living on land that can't sustain them.

To suggest that God specifically created a worm to torture small African children is blasphemy as far as I can see. The Archbishop of Canterbury doesn't believe that.

You have to steer a course between not appalling people, but at the same time not misleading them.