A MOB is not, as is so often said, mindless. A MOB is single-minded.

The White Savior Industrial Complex is not about justice. It is about having a big emotional experience that validates privilege.

Perhaps this is what we mean by sanity: that, whatever our self-admitted eccentricities might be, we are not villains of our own stories.

The content of Saul Leiter's photographs arrives on a sort of delay: it takes a moment after the first glance to know what the picture is about. You don't so much see the image as let it dissolve into your consciousness, like a tablet in a glass of water.

It is a work of psychogeography, albeit in a less explicit sense than Iain Sinclair's or Will Self's. It had to be fiction though, because I needed that freedom of including whatever belonged, and cutting out whatever didn't. The main fiction in it was matching Julius' generous and self-concealing character to New York's generous and self-concealing character. I think this also adds to my answer about New York's personality in the book.

Our biggest art forms are film and television, and there hasn't been a great film about 9/11 yet, nor has there been a great television series. Something like The Wire gives us a rich and fully achieved picture of the wasteful, cruel War on Drugs; something like The White Ribbon gives a perspective on World War I that could only have been presented long after the event itself.

Echo is very important to me. I love the repetition of motifs, or the slight alteration of what's been said before. This is part of how one creates a mood, a psychological caul, in fact, around the reader.