Well, I don't believe there are subjects that can't be painted, but there are a lot of things that I personally can't paint.

I started doing 'figures', then, one day, all of a sudden, I started doing abstraction. And then I started doing both. But it was never really a conscious decision. It was simply a question of desire. In fact, I really prefer making figurative work, but the figure is difficult. So to work around the difficulty I take a break and paint abstractly. Which I really like, by the way, because it allows me to make beautiful paintings.

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.

In 1981, I think, for the Kunsthalle in Düsseldorf. Before that I designed a mirror room for Kasper König's Westkunst show, but it was never built. All that exists is the design - four mirrors for one room.

Only about one per cent of my paintings show family members. Do they help me deal with problems? It's likely that these problems can only be depicted. But photographs, private ones and others, keep appearing that fascinate me so much that I want to paint them. And sometimes the real meaning these images have for me only becomes apparent later.

But I have a problem with the term 'light'. I never in my life knew what to do with that. I know that people have mentioned on some occasions that 'Richter is all about light', and that 'the paintings have a special light', and I never knew what they were talking about. I was never interested in light. Light is there and you turn it on or you turn it off, with sun or without sun. I don't know what the 'problematic of light' is. I take it as a metaphor for a different quality, which is similarly difficult to describe. Good.

What attracted me about my mirrors was the idea of having nothing manipulated in them. A piece of bought mirror. Just hung there, without any addition, to operate immediately and directly. Even at the risk of being boring. Mere demonstration. The mirrors, and even more the Panes of Glass, were also certainly directed against Duchamp, against his Large Glass.