I love being outdoors, being in the mountains and the desert, and my wife enjoys that too. That's one of the things that sustain our relationship.

The core of mans' spirit comes from new experiences.

Hours slide by like minutes. The accumulated clutter of day-to-day existence — the lapses of conscience, the unpaid bills, the bungled opportunities, the dust under the couch, the inescapable prison of your genes — all of it is temporarily forgotten, crowded from your thoughts by an overpowering clarity of purpose and by the seriousness of the task at hand.

Straddling the top of the world, one foot in China and the other in Nepal, I cleared the ice from my oxygen mask, hunched a shoulder against the wind, and stared absently down at the vastness of Tibet.

Passion is what makes life interesting, what ignites our soul, drives our curiosity, fuels our love and carries our friendship, stimulates our intellect, and pushes our limit.... A passion for life is contagious and uplifting. Passion cuts both ways.... Those that make you feel on top of the world are equally able to turnit upside down.

I think part of the appeal of Antarctica is experiencing some sort of power, the forces of the natural world.

Heaven, for me, is one focused project - it's like a weird form of autism.