Almost every work of art is an analogy. When I make a representation of something, this too is an analogy to what exists; I make an effort to get a grip on the thing by depicting it. I prefer to steer clear of anything aesthetic, so as not to set obstacles in my own way and not to have the problem of people saying: 'Ah, yes, that's how he sees the world, that's his interpretation.'

The grey paintings, for example, a painted grey surface, completely monochromatic - they come from a motivation, or result from a state, that was very negative. It has a lot to do with hopelessness, depression and such things. But it has to be turned on its head in the end, and has to come to a form where these paintings possess beauty. And in this case, it's not a carefree beauty, but rather a serious one.

Based on mixtures of the three primary colours, along with black and white, I come up with a certain number of possible colours and, by multiplying these by two or four, I obtain a definite number of colour fields that I multiply yet again by two, etc. But the complete realization of this project demands a great deal of time and work.

I remember that I felt I had to avoid all these sensational photos, the hanged woman, the man who shot himself, and so forth. I collected a great deal of material, including a number of banal, irrelevant photos, and then in the course of my work I came back to the very pictures I had actually wanted to avoid, which summed up the various stories.

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.

Composition is a side issue. Its role in my selection of photographs is a negative one at best. By which I mean that the fascination of a photograph is not in its eccentric composition but in what it has to say: its information content. And, on the other hand, composition always also has its own fortuitous rightness.

If, while I'm painting, I distort or destroy a motif, it is not a planned or conscious act, but rather it has a different justification: I see the motif, the way I painted it, is somehow ugly or unbearable. Then I try to follow my feelings and make it attractive. And that means a process of painting, changing or destroying - for however long it takes - until I think it has improved. And I don't demand an explanation from myself as to why this is so.

I find the Romantic period extraordinarily interesting. My landscapes have connections with Romanticism: at times I feel a real desire for, an attraction to, this period, and some of my pictures are a homage to Caspar David Friedrich.

To believe, one must have lost God. To paint, one must have lost art.