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.

One of the difficulties of photography is that it is much better at being explicit than at being reticent.

Still, there's that faint glimmer of hope we feel when we sense, in other people, the same kind of attentiveness to life that we take comfort in. Why else would anyone watch Haneke films or read Sebald? The material is grim, but it's redeemed by the quality of the attention.

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

Each time I caught sight of geese swooping in formation across the sky, I wondered how our life below might look from their perspective, and imagined that, were they ever to indulge in such speculation, the high-rises might seem to them like firs massed in a grove.

I just realized that we're facing here is an empathy gap. And this was just another way to generate conversation about something that nobody wanted to look at.

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.