From All Movie Guide: In Christopher McCandless, director Sean Penn has found a character that speaks to his own quest to find meaning in life. Instead of focusing on characters that are spiritually dead, as he did in his first three films, Penn gets to tell the story of a young man who is absolutely spiritually alive, and this spurs Penn the director onto a level of empathy equal to that of Penn the actor. One need not share McCandless' goals in order to appreciate Penn's movie -- this film is far from an endorsement to throw off the conventions of society and live off the land. The screenplay offers numerous reasons other than a romantic desire to lead a Thoreau-inspired life for McCandless to set off on his journey. There are painful psychological scars driving him, as well as an honest if occasionally petulant need simply to do what isn't expected of him. Emile Hirsch, the young actor playing McCandless, embodies all of these conflicting but powerful motivations in a performance that never once rings fa...

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