Life is an enigma. We have to approach it not scientifically but poetically.

At the age of nine, I could cross the length of Glasgow on a succession of buses, wearing regulation garter-topped stockings and compulsory cap and - if I'd done well enough to earn the honour in last week's test - with a First World War medal on a striped ribbon pinned to my brown blazer. I must have looked like a chocolate soldier.

For ten years, I went to piano lessons. I don't think I'm a very musical person, and the theory quite defeated me, but I had a freak aptitude for Debussy and Ravel.

We become attached to certain characters in novels, mostly because they have some mystery attaching to them. We re-read the books, but we're still left wanting to know more. In my own case, it was 'Great Expectations' and Miss Havisham in particular. Luckily, writers have the option of making up the knowledge that reading doesn't supply.

I think, when you are writing non-fiction, you feel there's an obligation to get it absolutely right, so all your factual details have to be, have, you know, to go through a long list of them and tick them. I'm not saying that's not important in fiction, but I think you have a bit more leeway; you can suit yourself.

I like French films, Chabrol in particular. With him, you often get a skewed morality in which you sympathise with the person you shouldn't.