My landscapes are not only beautiful, or nostalgic, with a Romantic or classical suggestion of lost Paradises, but above all 'untruthful.' By 'untruthful,' I mean the glorifying way we look at Nature. Nature, which in all its forms is always against us, because it knows no meaning, no pity, no sympathy, because it knows nothing and is absolutely mindless, the total antithesis of ourselves.

And then the work bears a strong sense of leave-taking for me personally. It ends the work I began in the 1960s (paintings from black-and-white photographs), with a compressed summation that precludes any possible continuation. And so it is a leave-taking from thoughts and feelings of my own on a very basic level. Not that this is a deliberate act, of course; it is a quasi-automatic sequence of disintegration and reformation which I can perceive, as always, only in retrospect.

When I look back on the townscapes now, they do seem to me to recall certain images of the destruction of Dresden during the war.

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.

I do not mistrust reality, of which I know next to nothing, but I am suspicious regarding the image of reality which our senses convey to us, and which is incomplete and limited. Our eyes have developed such as to survive. It is merely coincidence that we can see stars with them, as well.

Turning to the colour-classification methodology: The starting point are the four pure colours red, yellow, green and blue; their in-between shades and scales of brightness result in colour schemes containing 16, 64, 256 and 1,024 shades. More colours would be pointless because it wouldn't be possible to distinguish between them clearly.

Unlike the photography and prints, I never catalogued, kept track of or exhibited the sketches. I sold some occasionally, but never saw myself as a graphic artist. They became more important to me thanks to the exhibition, however, and I realized that these drawings were quite interesting after all.