“That autumn, I kept coming back to Hopper’s images, drawn to them as if they were blueprints and I was a prisoner; as if they contained some vital clue about my state. Though I went with my eyes over dozens of rooms, I always returned to the same place: to the New York diner of Nighthawks, a painting that Joyce Carol Oates once described as “our most poignant, ceaselessly replicated romantic image of American loneliness”...Green shadows were falling in spikes and diamonds on the sidewalk. There is no colour in existence that so powerfully communicates urban alienation, the atomisation of human beings inside the edifices they create, as this noxious pallid green, which only came into being with the advent of electricity, and which is inextricably associated with the nocturnal city, the city of glass towers, of empty illuminated offices and neon signs.”