What I'm really interested in, as a reader and as a writer, is the idea of the nonfiction book that is not defined by its content, by its "about"-ness. Where you read it irrespective of whether you're interested in the subject.

There's something about New York. You can get a nice feeling of belonging as a writer here. It's probably the best city on Earth like that. I miss the wisecracking of New York.

Like most writers I spend a lot of my time sort of thinking, "It's such agony, I can't do it."

Have more than one idea on the go at any one time. If it's a choice between writing a book and doing nothing I will always choose the latter. It's only if I have an idea for two books that I choose one rather than the other. I ­always have to feel that I'm bunking off from something.

In my 30s I used to go to the gym even though I hated it. The purpose of going to the gym was to postpone the day when I would stop going. That's what writing is to me: a way of postponing the day when I won't do it any more, the day when I will sink into a depression so profound it will be indistinguishable from perfect bliss.

These days any self-respecting exhibition of nude photos has to have pornographically explicit images to prove that they are works of art.

I want to stress, this is the experience-growing up in a working-class family-that defined me and continues to define me. It's the core of my being. And it explains, incidentally, a good deal about my love of America.