Young people wonder “Who am I, really?” more often than older people do. Older people often think this is because young people know so much less. I think it is because young people know something more—one thing, at least, that older people often forget: that everybody’s real self is a mystery, that once we stop fooling ourselves, we recognize that we don’t know who we really are. The whole human race can learn this one great lesson, at least, from teenagers:
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