In almost every photograph I have ever made, there is something I would do to complete it. I take that to be the spirit hole or the deliberate mistake that's in a Navajo rug to not be godlike, but to be human.

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.

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.

What I'm interested in is modern American history. I'm taken with the changes that have occurred in America in my lifetime.

I was asked by a student what my most significant accomplishment was at National Geographic, after thirty years, and I said that my career came to an appropriate close, and I still loved photography. Not everybody who spends their career at anything ends up fascinated and involved with it.

It's a little bit like talking about the life of writing. The life of writing may be about many things, but it always begins with the writer. With the kernel of an idea, or a character, or an idea or a theme, or even an outcome. But for documentary photographers, photographs begin at that intersection of the real world and the imaginative inner world.

I think of myself as a writer who photographs. Images, for me, can be considered poems, short stories or essays. And I've always thought the best place for my photographs was inside books of my own creation.