I just happened to have my camera and be photographing my friends. It was totally innocent; there was no purpose to the photographs. There was a purity to them that wasn't planned; it was realism. Over the years, the work has changed for me. I know that I have wanted to repeat myself, but I can't. I've been lost a lot of times, but then I'd just get an idea and photograph it. Once I'd started, I'd know exactly what would go down and how it would end. So I just quit doing it, because it loses all interest for me when you know what's going to happen.

If you're going to photograph skateboarders you can't run after them, you've got to learn how to skate. So at about 50 years old I learned how to skate, and skate fast enough to keep up with them and hold my camera.

[Eugene Smith] was always writing these diatribes about truth, and how he wanted to tell the truth, the truth, the truth. It was a real rebel position. It was kind of like a teenager's position: why can't things be like they should be? Why can't I do what I want? I latched on to that philosophy. One day I snapped, hey, you know, I know a story that no one's ever told, never seen, and I've lived it. It's my own story and my friends' story.

I was over self-medicating back when I was a kid and didn't know it.

I learned how to skate, I couldn't do the tricks, but I could certainly skate fast enough. I could keep up with anybody and I could bomb hills and I could hide behind my camera.

I've always been interested in people that you wouldn't see otherwise. If you look back at my books, photographs, and films-and since I'm doing this retrospective I've been forced to look back-the work is always about a small group of people who are somewhat isolated, and who you would never see if I didn't film or photograph them.

If I want something I do everything to get it.