If one book's done this well, you want to write another one that does just as well. There's that horror of the second novel that doesn't match up.

One person looks around and sees a universe created by a god who watches over its long unfurling, marking the fall of sparrows and listening to the prayers of his finest creation. Another person believes that life, in all its baroque complexity, is a chemical aberration that will briefly decorate the surface of a ball of rock spinning somewhere among a billion galaxies. And the two of them could talk for hours and find no great difference between one another, for neither set of beliefs make us kinder or wiser.

I am really interested in eccentric minds. It's rather like being fascinated by how cars work. It's really boring if your car works all the time. But as soon as something happens, you get the bonnet up. If someone has an abnormal or dysfunctional state of mind, you get the bonnet up.

Books are like people. Some look deceptively attractive from a distance, some deceptively unappealing; some are easy company, some demand hard work that isn’t guaranteed to pay off. Some become friends and say friends for life. Some change in our absence - or perhaps it is we who change in theirs - and we meet up again only to find that we don’t get along any more.

I started writing books for children because I could illustrate them myself and because, in my innocence, I thought they'd be easier.

I want my name to mean me.

I am atheist in a very religious mould. I'm always asking myself the big questions. Where did we come from? Is there a meaning to all of this? I read the King James Bible, as all English writers should. And when I find myself in church, I edit the hymns as I sing them.