Military investigations are designed not to find anyone guilty.

It was titillating to brush up against the enigma of mortality, to steal a glimpse across its forbidden frontier. Climbing was a magnificient activity, I firmly believed, not in spite of the inherent perils, but precisely because of them.

The sad end he met in Afghanistan was more accurately a function of his stubborn idealism - his insistence on trying to do the right thing. In which case it wasn't a tragic flaw that brought Tillman down, but a tragic virtue.

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

When Alex left for Alaska," Franz remembers, "I prayed. I asked God to keep his finger on the shoulder of that one; I told him that boy was special. But he let Alex die. So on December 26, when I learned what happened, I renounced the Lord. I withdrew my church membership and became an atheist. I decided I couldn't believe in a God who would let something that terrible happen to a boy like Alex.

Unlike most of life, what you do really matters. Your actions have real consequences. You have to pay attention and focus, and that's very satisfying. It forces you to pay great attention and you lose yourself in the task at hand. Without the risk, that wouldn't happen, so the risk is an essential part of climbing, and that's hard for some people to grasp. You can't justify the risk when things go wrong and people die. The greater the risk, the greater the reward in most aspects of life, and in climbing that's certainly true, too. It's very physical, you use your mind and your body.

He read a lot. He used a lot of big words. I think maybe part of what got him into trouble was that he did too much thinking. Sometimes he tried too hard to make sense of the world, to figure out why people were bad to each other so often. A couple of times I tried to tell him it was a mistake to get too deep into that kind of stuff, but Alex got stuck on things. He always had to know the absolute right answer before he could go on to the next thing.