'Woman on the Plaza,' with its distinct horizon, snow-like surfaces, wintry wall, stunning sunlight, sharp shadows, and hurrying figure, would become the most biographical of my photographs - an abstract image of the landscape and life of northern Ohio where I grew up and first practiced photography.

The best lesson I was given is that all of life teaches, especially if we have that expectation.

When assignments were over, photography continued. One of the primary reasons it did was that I wanted and needed to have fresh work. Also, it's very stimulating to be around non-professional photographers. They're the ones with the purest flame burning about their photography. I appreciate that.

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.

Typically I see it with photographers who go to a place like India or Nepal, and everything's so colorful and exotic and they think, therefore, a picture's been taken.

There are grander and more sublime landscapes - to me. There are more compelling cultures. But what appeals to me about central Montana is that the combination of landscape and lifestyle is the most compelling I've seen on this earth. Small mountain ranges and open prairie, and different weather, different light, all within a 360-degree view.

I did a story for the Geographic on Meriwether Lewis and William Clark, and Stephen Ambrose was the writer. He said, "I've got the easiest job in the world. I just have to re-tell the story of the greatest fishing, camping, hunting, canoeing trip of all time. You, Sam, have the hardest job, which is, pretend like nothing has happened in the last 200 years.