This ongoing coexistence which makes life sensational. The eyes have this ability to flip around what they see from one second to another, to see something as an object, and then as a design. That's really liberating, and I try to convey that in my work, that your eyes are free and you are free to use them.

What I'm interested in is happiness with a full awareness of the tragedy of life, the potential tragedy that lurks around every corner and the tragedy that actually is life.

This act of piss, which can be considered sexual by some, a pleasurable experience, is at the same time total disrespect. I had once asked a friend to do this picture and he totally refused. So I carried the idea around with me for years. When I was invited to do a Honcho shoot, I approached Phillip, who was the barman at The London Apprentice, and fortunately he knew who I was. He had a copy of my first book, and that broke the ice. At the end of the shoot with him, I realized I could ask him to do this picture. I had waited four years to do it.

The mobility of the eye is such a fundamental treasure that we have, and that coexists with sensation. On the dance floor, you are totally in reality, while also experiencing this dream imagery of changing colors and wet surfaces of skin. Sometimes it's the shadow outline in the strobe light, and in another moment it's the closeup of an armpit that you're looking into. I'm not photographing all the time, but it's something that I actually see all the time, and not just on the dance floor.

There is this looking at the world as shapes and patterns and colors that have meaning, and you can't deny the superficial because the superficial is what meets the eye. The content can never be disconnected from the surface, and this active interest in surface can never be disregarded from the good art that we admire.

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.

Whatever pictures are put into the world, the balance needs to be readdressed, it needs to be observed. That's why I am also really questioning what a lot of photography has done since I began. I am not saying because of me, but I mean, photographing some friends partying and publishing the pictures meant something else in '92 than it does in 2011. And I find the younger generation is not questioning this at all today.