It can be a work by Mondrian, a piece of music by Schönberg or Mozart, a painting by Leonardo, Barnett Newman or also Jackson Pollock. That's beautiful to me. But also nature. A person can be beautiful as well. And beauty is also defined as 'untouched'. Indeed, that's an ideal: that we humans are untouched and therefore beautiful.

The first colour charts were unsystematic. They were based directly on commercial colour samples. They were still related to Pop Art. In the canvases that followed, the colours were chosen arbitrarily and drawn by chance. Then, 180 tones were mixed according to a given system and drawn by chance to make four variations of 180 tones. But after that the number 180 seemed too arbitrary to me, so I developed a system based on a number of rigorously defined tones and proportions.

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.

But it is also untrue that I have nothing specific in mind. As with my landscapes: I see countless landscapes, photograph barely 1 in 100,000, and paint barely 1 in 100 of those that I photograph. I am therefore seeking something quite specific; from this I conclude that I know what I want.

Cage is much more disciplined. He made chance a method and used it in constructive ways; I never did that. Everything here is a little more chaotic.

I go to the studio every day, but I dont paint every day. I love playing with my architectural models. I love making plans. I could spend my life arranging things.

How could one be in this world without feeling dismayed by it? Even if one paints flowers and gingerbread.