All photographs are far more important than any painting.

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.

... landscapes or still-lifes I paint in between the abstract works; they constitute about one-tenth of my production. On the one hand they are useful, because I like to work from nature - although I do use a photograph - because I think that any detail from nature has a logic I would like to see in abstraction as well.

My paintings are wiser than I am.

Art is the highest form of hope.

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.

Perhaps the Doors, Curtains, Surface Pictures, Panes of Glass, etc. are metaphors of despair, prompted by the dilemma that our sense of sight causes us to apprehend things, but at the same time restricts and partly precludes our apprehension of reality.