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.

I have no motif, only motivation. I believe that motivation is the real thing, the natural thing, and that the motif is old-fashioned, even reactionary (as stupid as the question about the meaning of life)

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.

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.

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.

The reason these paintings are destined for New York is not because I am disappointed about a lack of German interest, but because MoMA asked me, and because I consider it to be the best museum in the world.

I never worked at painting as if it were a job; it was always out of interest or for fun, a desire to try something.