Science has taught us, against all intuition, that apparently solid things like crystals and rocks are really almost entirely composed of empty space. And the familiar illustration is the nucleus of an atom is a fly in the middle of a sports stadium, and the next atom is in the next sports stadium.

What has happened is that genetics has become a branch of information technology. It is pure information. It's digital information. It's precisely the kind of information that can be translated digit for digit, byte for byte, into any other kind of information and then translated back again. This is a major revolution. I suppose it's probably "the" major revolution in the whole history of our understanding of ourselves. It's something would have boggled the mind of Darwin, and Darwin would have loved it, I'm absolutely sure.

Charles Darwin made arguably the greatest discovery any human has ever made. He was a man of great persistence. He wasn't probably a natural genius, he worked very hard - even though he was an invalid. He was a great family man, a very nice man. I think he was admirable in all sorts of ways.

Bush and bin Laden are really on the same side: the side of faith and violence against the side of reason and discussion. Both have implacable faith that they are right and the other is evil.

Superficially it's a problem if homosexuality is genetic - if the difference between people's sexual preferences is genetic - because at least a pure homosexual would be unlikely to reproduce and therefore pass on the genes. So the first question you ask is, is it actually genetic, and the answer is probably to some extent yes.

I've seen [Lalla Ward] episodes of "Doctor Who." They're good, at least partly because the scripts were written by Douglas Adams.

A child is not a Christian child, not a Muslim child, but a child of Christian parents or a child of Muslim parents. This latter nomenclature, by the way, would be an excellent piece of consciousness-raising for the children themselves. A child who is told she is a 'child of Muslim parents' will immediately realize that religion is something for her to choose -or reject- when she becomes old enough to do so.