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.

In the last workshop I taught, a woman flew in from Thailand. She's a medical doctor in Bangkok. I asked her in her one-on-one session where she wanted photography to be in her life.Did she want a second career? Was it about earning money? Or was it art? And she said "None of those. I want photography to be serious in my life." It would be like someone wanting music, like piano playing, to be a richer, deeper, and maybe even harder experience.

When I first went to 'National Geographic,' I thought I was the least qualified person to step through the doors. But because of my parents and the culture of continual learning they imposed on us, I later came to believe I was the most qualified person who ever worked there.

I had a book come out several years ago, when there were no blogs. This is a mark to me about how the environment has changed.

My Dad took a workshop from a photographer who worked at the Toledo Blade, a newspaper I delivered. I knew this photographer's work. My Dad took a night class from him at the University of Toledo. Without that class, I wouldn't have become a photographer, because my Dad came home and taught me what he learned in class.

My father taught me photography. It was his hobby, and we had a small darkroom in the fruit cellar of our basement. It was the kind of makeshift darkroom that was only dark at night.

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.