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.

I heard this wonderful quote - "Only the brave show what they love." It's so-embarrassing to approach somebody and say you want to look at them. But without that risk taking, nothing can happen, so I have to make myself vulnerable. What I think is the unifying aspect in people that I like is that they have a sense of their own vulnerability, and I respond to that.

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.

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.

Big ideas don't make them selves known as big. They begin with the little, ridiculous ideas that most people would discard or reject. Every successful picture I've done has really been based on taking a very flimsy, fleeting little idea, grabbing hold of it, and taking it seriously.

Growing up in the '80s, questions of style and music and youth culture all seemed inherently political - like gay rights issues, dressing up, wearing makeup, arms protests. A lot of attitude and opinions were expressed through clothes, and they all were meaningful. So in that way, I was so excited about the connection between our private lives and politics - who I kiss, how I like to dance.