I didn't actually know what the protesters in the West really wanted. It was fantastic here, so much freedom, and that was what they were calling musty, middle-class, and fascistic, a bleak period. Bleak was what the GDR was, and it alone had adopted, almost unchanged, Nazi Germany's methods of intimidation and ideas about propaganda and the use of force.

The grey is certainly inspired by the photo-paintings, and, of course, it's related to the fact that I think grey is an important colour - the ideal colour for indifference, fence-sitting, keeping quiet, despair. In other words, for states of being and situations that affect one, and for which one would like to find a visual expression.

In 1981, I think, for the Kunsthalle in Düsseldorf. Before that I designed a mirror room for Kasper König's Westkunst show, but it was never built. All that exists is the design - four mirrors for one room.

The painter sees the semblance of things and repeats it. That is, without fabricating the things himself, he fabricates their semblance; and, if that no longer recalls any object, this artificially produced semblance functions only because it is scrutinized for likeness to a familiar - that is, object-related - semblance.

But I have a problem with the term 'light'. I never in my life knew what to do with that. I know that people have mentioned on some occasions that 'Richter is all about light', and that 'the paintings have a special light', and I never knew what they were talking about. I was never interested in light. Light is there and you turn it on or you turn it off, with sun or without sun. I don't know what the 'problematic of light' is. I take it as a metaphor for a different quality, which is similarly difficult to describe. Good.

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.

I wanted to make it as anonymous as a photo. But it was perhaps also the wish for perfection, the unapproachable, which then means loss of immediacy. Something is missing then, though; that is why I gave that up.