I think that photography has a lot to do with sculpture – because it is three-dimensional and because it depicts reality. For example, I have always been able to relate to photography more than to painting. When I was photographing the hi-fi adverts ['Hi-Fi-Serie' (1979)] I thought to myself, everyone has one of these towers at home. It's the latest thing, the most modern equipment available. So a sculpture must be at least as modern and must stand up to it. Then I hung the pictures on the wall and put an ellipsoid on the floor and thought, the ellipsoid must be at least as good as this advert. At least as good. That's how good a modern sculpture has to be. Do you see what I mean? That was the dialogue...

'Isa Genzken in conversation with Wolfgang Tillmans' (2003)