The most extraordinary thing about trying to piece together the missing links in the evolutionary story is that when you do find a missing link and put it in the story, you suddenly need all these other missing links to connect to the new discovery. The gaps and questions actually increase - it's extraordinary.

If I can make programmes when I'm 95, that would be fine. But I would think I'll have had enough by then.

I'm swanning round the world looking at the most fabulously interesting things. Such good fortune.

There are perfectly good independent small nations.

I've been to Nepal, but I'd like to go to Tibet. It must be a wonderful place to go. I don't think there's anything there, but it would be a nice place to visit.

I think the most alarming animals I have encountered are really poisonous snakes.

Many individuals are doing what they can. But real success can only come if there is a change in our societies and in our economics and in our politics.