I really like the George Clooney of Solaris also filmed by Andrei Tarkovsky, before Steven Soderbergh: that's very obviously sci-fi, and it seems to me a great film. But whatever pigeon-hole you put Stalker into you would both be increasing the risk of disappointing people and diminishing the film.

Nicholson Baker talks about the way in which the most successful nonfiction books are those that can be boiled down into an argument so that everybody can wade in with an opinion without having to undergo the inconvenience of having to read the book itself. The more you can condense it, the better.

I'd have no rituals, but I'm a person of compulsive habit. That's just some awful residue of a ritual. And one of the reasons for that is my living this life, which is otherwise so free of obligations. It's not at all unusual for anybody who's independently employed to crave a way of living whereby they create the structures without which their lives would otherwise start slopping around all over the place.

People say it's not what happens in your life that matters, it's what you think happened. But this qualification, obviously, did not go far enough. It was quite possible that the central event of your life could be something that didn't happen, or something you thought didn't happen. Otherwise there'd be no need for fiction, there'd only be memoirs and histories.

I think I can recognize when a piece is at a state of completion. I always say to my wife, "Oh yeah, it's roughly finished." I've got it there. And then there's that whole other phase of moving on to properly amp up the sentences and sometimes to move stuff around as well.

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.

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.