The photograph is the most perfect picture. It does not change; it is absolute, and therefore autonomous, unconditional, devoid of style. Both in its way of informing, and in what it informs of, it is my source.

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.

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.

The Atlas belongs to the Lenbachhaus in Munich - it's long since ceased to belong to me. Occasionally I run across it somewhere, and I think it's interesting because it looks different each time.

A work of art is itself an object, first of all, and so manipulation is unavoidable: it's a prerequisite. But I needed the greater objectivity of the photograph in order to correct my own way of seeing: for instance, if I draw an object from nature, I start to stylize and to change it in accordance with my personal vision and my training. But if I paint from a photograph, I can forget all the criteria that I get from these sources. I can paint against my will, as it were. And that, to me, felt like an enrichment.

... landscapes or still-lifes I paint in between the abstract works; they constitute about one-tenth of my production. On the one hand they are useful, because I like to work from nature - although I do use a photograph - because I think that any detail from nature has a logic I would like to see in abstraction as well.

Politicians are nauseating by definition... They can produce nothing, neither a loaf of bread nor a table nor a picture; and this inability to create value, this total inferiority, makes them jealous, vengeful, insolent and a menace to life and limb.