We think in terms of fate even if we don't believe in it. Even something as trivial as missing the bus - we think: Well, it might be good for something. We always have that thought, no matter how critical we try to be. The idea that everything is always total chance - we're not made for that.

Usually I work out the plot before I start. This time I thought: Writers always talk about not knowing where a book is going - -I want to experience that, too. What I found out is that it's very interesting, but it takes much longer because you have so many false starts. You take wrong turns and you have to go back and start the whole chapter, or the whole section, from scratch.

I wanted to write a book that would leave open many riddles and mysteries, even to me. Of course in some cases I do know the answers, but in many others I don't know and don't want to know.

One of the points where the art world is at its most metaphysical is in this weird aspect of the power of the expert. There are experts who claim they cannot be fooled because they have an inner connection to an artist and can feel whether something is genuine or fake. I've heard experts say, on panels: When it comes to my period, or my painters, I cannot be fooled. And of course that's completely ridiculous.

When I write a book I'm always questioning the project as a whole. I always feel I might have to just throw it away and forget about it, and I've done that with novels I've started and worked on for a long time. It's an option I need in order to write freely.

It's also one of these strange points where metaphysics converges with economy. Because really what the experts are doing is creating value by banishing doubt. All great dead painters basically have this one person, this expert who has the metaphysical power to grant a seal of authenticity.

I really just wanted to write about three brothers. When you do that, though, it gives you this wonderful opportunity to tie together different social milieus, because siblings usually move into different worlds as they grow up.