" Not only during the ascent but also during the descent my will-power is dulled. The longer I climb the less important the goal seems to me, the more indifferent I become to myself. My attention has diminished, my memory is weakened. My mental fatigue is now greater than the bodily. It is so pleasant to sit doing nothing—and therefore so dangerous. Death through exhaustion is—like death through freezing—a pleasant one. Reinhold Messner The Crystal Horizon "

― Jon Krakauer , Into Thin Air: A Personal Account of the Mount Everest Disaster