To defend painting: One has to believe in what one is doing, one has to commit oneself inwardly, in order to do painting. Once obsessed, one ultimate… - Gerhard Richter

'1,024 Colours in 4 Permutations'
In order to represent all extant colour shades in one painting, I worked out a system which – starting from the three primaries, plus grey – made possible a continual subdivision (differentiation) through equal gradations. 4 x 4 = 16 x 4 = 64 x 4 = 256 x 4 = 1,024. The multiplier 4 was necessary because I wanted to keep the image size, the square size and the number of squares in a constant proportion to each other. To use more than 1,024 tones (4,096, for instance) seemed pointless, since the difference between one shade and the next would no longer have been detectable.
The arrangement of the colours on the squares was done by a random process, to obtain a diffuse, undifferentiated overall effect, combined with stimulating detail. The rigid grid precludes the generation of figurations, although with an effort these can be detected. This aspect of artificial naturalism fascinates me – as does the fact that, if I had painted all the possible permutations, light would have taken more than 400 billion years to travel from the first painting to the last. I wanted to paint four large, colourful pictures.

In the early 1960s, having just come over from the GDR, I naturally declined to summon up any sympathy for the aims and methods of the Red Army Faction [RAF]. I was impressed by the terrorists' energy, their uncompromising determination and their absolute bravery; but I could not find it in my heart to condemn the State for its harsh response. That is what States are like; and I had known other, more ruthless ones. The deaths of the terrorists, and the related events both before and after, stand for a horror that distressed me and has haunted me as unfinished business ever since, despite all my efforts to suppress it.

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.