I always think that we know so much more than one would have ever known before. But I don't know if that's really true.

The picture of the guy pissing on the chair was a picture I had to do. I had the idea of this absurd act of pissing on a chair rather than in a toilet or on the ground, and this minimal act being so transgressive, even though no major harm is done.

It would be so easy to lose the plot now. It's not about achieving something for its own sake, and taking pictures for their own sake. But to make conscious decisions and choices, and it includes this constant questioning - Why am I taking pictures? Because really, the world is... it has pictures enough. I mean, there are enough pictures out there.

A photocopier is a camera in its own right. I was fortunate to grow up in the time and culture that I did. I was allowed to develop an awareness that the art that really moves me is actually based on an original image.

Books have this function that help me to understand the work I've done, to wrap it up. Once it's done, fortunately, it doesn't mean there's closure. Change in my work happens not in revolutions - it's more evolutionary.

For example, you now look at pictures from 1968, they are hugely misleading in terms of standing in as an absolute image of the time. Because maybe two percent of the people looked the way that we now associate with that time. I was also aware that what I was aiming for is an idealized, utopian version of how people could be together. I found photography to be a very powerful tool because as long as it looks real, it is perceived as real.

I want the pictures to be working in both directions. I accept that they speak about me, and yet at the same time, I want and expect them to function in terms of the viewer and their experience. With these abstract pictures, although the eye recognizes them as photographic rather than painted, the eye also tries to connect them to reality. There's always this association machine working in the brain, and that is why it is important to me that they are actually photographic and not painted.