What is the most interesting thing to people? Other people.

The cell is a city of production centres, each part working away like mad, and it's co-ordinated. Six trillion cells in a body - you can't help but be moved.

A sign to me is a one-liner, a symbol is very complex and my house is a series of symbols.

You know, Darwin said through natural selection things go gradually, and he was talking about pigeon's evolution or horses evolving, getting faster. But in fact if you look at evolution on a bigger scale, cosmic evolution and you look at culture evolution you see it jumps, it goes through phase changes, and that's very exciting.

You have to believe in a placebo or it wont work, but if it works, its obviously working in some indirect way, through feedback in the immune system, let us say, or in the willpower of the patient to take a more strenuous exercise in their own therapy.

I've been a lucky man. I've only faced one real tragedy: the death of my wife, Maggie, from cancer in 1995.

Beautiful people are always with us, as evolutionary psychologists and a trip to the news-stand confirm.