It would be easy to stereotype Christopher McCandless as another boy who felt too much, a loopy young man who read too many books and lacked even a modicum of common sense. But the stereotype isn't a good fit. McCandless wasn't some feckless slacker, adrift and confused, racked by existential despair. 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. He demanded much of himself -- more, in the end, than he could deliver.