No matter whether one is flying over Newfoundland or the sea of lights that stretches from Boston to Philadelphia after nightfall, over the Arabian deserts which gleam like mother-of-pearl, over the Ruhr or the city of Frankfurt, it is as though there were no people, only the things they have made and in which they are hiding.

I felt that the decrepit state of these once magnificent buildings, with their broken gutters, walls blackened by rainwater, crumbling plaster revealing the coarse masonry beneath it, windows boarded up or clad with corrugated iron, precisely reflected my own state of mind.

Otherwise, all I remember of the denizens of the Nocturama is that several of them had strikingly large eyes, and the fixed inquiring gaze found in certain painters and philosophers who seek to penetrate the darkness which surrounds us purely by means of looking and thinking.

By all means be experimental, but let the reader be part of the experiment

In my photographic work I was always especially entranced... by the moment when the shadows of reality, so to speak, emerge out of nothing on the exposed paper, as memories do in the middle of the night, darkening again if you try to cling to them.

The seasons and the years came and went...and always...one was, as the crow flies, about 2,000 km away - but from where? - and day by day hour by hour, with every beat of the pulse, one lost more and more of one's qualities, became less comprehensible to oneself, increasingly abstract.

At the most we gaze at it in wonder, a kind of wonder which in itself is a form of dawning horror, for somehow we know by instinct that outsize buildings cast the shadow of their own destruction before them, and are designed from the first with an eye to their later existence as ruins.