I can't speak for other photographers, but the photographers who went forward strongly when the so-called "official" part of their career ended, to me, were those who had taught. Teaching enriches and enlivens one's work.

I think that it's workshops, honestly, that have kept me keen about photography, and about my photography. My career as a workshop photographer came while I was at the Geographic in the late 70's, and has continued consistently since then.

Life rarely presents fully finished photographs. An image evolves, often from a single strand of visual interest - a distant horizon, a moment of light, a held expression.

As I have practiced it, photography produces pleasure by simplicity. I see something special and show it to the camera. A picture is produced. The moment is held until someone sees it. Then it is theirs.

My parents, grandmother and brother were teachers. My mother taught Latin and French and was the school librarian. My father taught geography and a popular class called Family Living, the precursor to Sociology, which he eventually taught. My grandmother was a beloved one-room school teacher at Knob School, near Sonora in Larue County, Ky.

A very big part of the life of a photograph is the afterlife.

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.