All the history of human life has been a struggle between wisdom and stupidity.

And I came to believe that good and evil are names for what people do, not for what they are. All we can say is that this is a good deed, because it helps someone or that's an evil one because it hurts them. People are too complicated to have simple labels.

I'm for open-mindedness and tolerance. I'm against any form of fanaticism, fundamentalism or zealotry, and this certainty of 'We have the truth.' The truth is far too large and complex. Nobody has the truth.

We shouldn't live as if [other worlds] mattered more than this life in this world, because where we are is always the most important place.

I don't see any sign of God in this world, in the place where we live and things we know. It can all be explained to my mind perfectly satisfactorily without God. But in the great darkness beyond this little spark of light where I live, of course there may be all kinds of things. There may be a god. So I'm really an agnostic.

He's [Jesus] the most fascinating character in history, really - the character who's made more difference to the world than anyone since him. I daresay that Muslims would say Muhammad was that character, but I think Jesus had a sort of 600-year start on him.

My books are about killing God.