I originally came from Dresden, where Socialist Realism prevailed. Konrad Lueg and I came up with it, for the most part ironically, since I now live in capitalism. It was certainly 'realism', but in another form - the capitalist form, as it were. It wasn't meant that seriously. It was more a slogan for that particular Happening at a furniture store.

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.

Cage is much more disciplined. He made chance a method and used it in constructive ways; I never did that. Everything here is a little more chaotic.

I believe that art has a kind of rightness, as in music, when we hear whether or not a note is false

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.

Yes, we were amazed when that happened. It was a real joke to us. Konrad Lueg and I did a Happening, and we used the phrase just for the Happening, to have a catchy name for it; and then it immediately got taken up and brought into use. There's no defence against that - and really it's no bad thing.

Architecture was, or is, a kind of hobby, an inclination I have to fiddling around and building things. Putting up shelves or cupboards, or making tools, or designing houses ... it always has a functional or social motivation. If social changes are in the air, I am gripped immediately by the desire to build, and I think that I accelerate or anticipate changes in my life by doing so, at least in draft. In the case of my house, that was anticipation: in other words, first build, then change one's life.