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.

There's always something impressive when people are giving themselves to their job absolutely. The military thing - I was conscious that their routine, their way of living is so opposite to mine. In some ways their life seemed intolerable to me. But, mine would be to them, too, because this strangely laissez-faire life of mine actually comes with its obligations as well.

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.

One of the reasons so many nonfiction books are so boring is because what they've done, very diligently, is fulfill the terms of their proposals. They've written up their proposal, long-form, and often what this does is then set up a sort of serial deal, where the whole book can essentially be reduced back to the size of the original proposal!

I guess that as life is speeded up and our capacity for concentration is being nibbled away at by all the obvious things, that leads us actually to be more susceptible to boredom.

It's this thing that's going on all the time - aging. Paul Auster quotes the poet George Opren on growing old: "What a strange thing to happen to a little boy." Which I think is so profound.