Mountains make poor receptacles for dreams.

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.

Having stumbled upon a tolerable career, for the first time in my life I was actually living above the poverty line. My hunger to climb had been blunted, in short, by a bunch of small satisfactions that added up to something like happiness.

To the contrary: His life hummed with meaning and purpose. But the meaning he wrested from existence lay beyond the comfortable path: McCandless distrusted the value of things that came easily.

Now what is history? It is the centuries of systematic explorations of the riddle of death, with a view to overcoming death. That's why people discover mathematical infinity and electromagnetic waves, that's why they write symphonies.

The thing that is most beautiful about Antarctica for me is the light. It's like no other light on Earth, because the air is so free of impurities. You get drugged by it, like when you listen to one of your favorite songs. The light there is a mood-enhancing substance.

In climbing, having confidence in your partners is no small concern. One climber's actions can affect the welfare of the entire team.