When I first painted a number of canvases grey all over (about eight years ago), I did so because I did not know what to paint, or what there might be to paint: so wretched a start could lead to nothing meaningful. As time went on, however, I observed differences of quality among the grey surfaces - and also that these betrayed nothing of the destructive motivation that lay behind them. The pictures began to teach me. By generalizing a personal dilemma, they resolved it.

As far as the surface is concerned - oil on canvas, conventionally applied - my pictures have little to do with the original photograph. They are totally painting (whatever that may mean). On the other hand, they are so like the photograph that the thing that distinguished the photograph from all other pictures remains intact.

It was not possible for us to produce the same optimism and the same kind of humour or irony. Actually, it was not irony. Lichtenstein is not ironic but he does have a special kind of humour. That's how I could describe it: humour and optimism. For Polke and me, everything was more fragmented. But how it was broken up is hard to describe.

Perhaps the choice is a negative one, in that I was trying to avoid everything that touched on well-known issues - or any issues at all, whether painterly, social or aesthetic. I tried to find nothing too explicit, hence all the banal subjects; and then, again, I tried to avoid letting the banal turn into my issue and my trademark. So it's all evasive action, in a way.

I began in 1976, with small abstract paintings that allowed me to do what I had never let myself do: put something down at random. And then, of course, I realized that it never can be random. It was all a way of opening a door for me. If I don't know what's coming - that is, if I have no hard-and-fast image, as I have with a photographic original - then arbitrary choice and chance play an important part.

Painting is traditional but for me that doesn't mean the academy. I felt a need to paint; I love painting. It was something natural - as is listening to music or playing an instrument for some people. For this reason I searched for themes of my era and my generation. Photography offered this, so I chose it as a medium for painting.

The year is always correct, also the month, only the day can be another. But that occurs to me only in the moment of writing it down.