The happy man does not look back. He doesn't look ahead. He lives in the present. But there's the rub. The present can never deliver one thing: meaning. The ways of happiness and meaning are not the same. To find happiness, a man need only live in the moment; he need only live for the moment. But if he wants meaning - the meaning of his dreams, his secrets, his life - a man must reinhabit his past, however dark, and live for the future, however uncertain.
Jed Rubenfeld: The Interpretation of Murder