Photography, alone of the arts, seems perfected to serve the desire humans have for a moment - this very moment - to stay.

For sheer majestic geography and sublime scale, nothing beats Alaska and the Yukon. For culture, Japan. And for all-around affection, Australia.

The reason I don't want to say anything about it is it has a strange power to take over the conversation. Just like it's doing with us. I was asked to participate in a documentary about Richard Prince, and be the voice of someone who was appropriated, and I declined. The reason I did is I don't want it to be the subject of the discussion of my work.

And that desire-the strong desire to take pictures-is important. It borders on a need, based on a habit: the habit of seeing. Whether working or not, photographers are looking, seeing, and thinking about what they see, a habit that is both a pleasure and a problem, for we seldom capture in a single photograph the full expression of what we see and feel. It is the hope that we might express ourselves fully-and the evidence that other photographers have done so-that keep us taking pictures.

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?

In my first class at the University of Kentucky, my American Literature professor came in, and the first sentence out of his mouth was "The central theme of American Literature is an attempt to reconcile what we've done to the New World." wrote that down in my notebook, and thought, "What is he talking about?" But that's what I think about now. The New World and what we've done to it.

That statement [ Stephen Ambrose:'You, Sam, have the hardest job, which is, pretend like nothing has happened in the last 200 years.'] woke me up to the fact that the landscape that Lewis and Clark came across was greater than the Serengeti. And it's gone.