I did it once, and National Geographic recruited me. I did it primarily out of curiosity. A lot of legendary photographers had worked on that campaign. Ernst Haas had done the early photography, and I knew him. There's a lore in photography about that campaign, and I was curious.

I'm very involved in photographing America now, so I don't think of faraway places, as I did when I was young.

Yes, there are billions more photographers, and billions more photographs every day, but who's building up a point of view? Who's photographing with intention, and whose body of work will sustain itself and survive?

Though Geographic didn't publish that photo in the story that it was done for, "The Life of Charlie Russell," a cowboy artist in Montana. But later, maybe a year and a half ago, they named it one of the 50 greatest pictures ever made at National Geographic.

Teaching has never been far from my life. It's the most natural thing I do. Apparently, as I said, I cannot not do it.

Richard Prince's most famous photograph was made by me.

The unusual wins out over the usual.