<p>One of America's preeminent psychiatrists draws on his famous <i>Study of Adult Development</i> to give us an exhilarating look at how the mind's defenses work. What we see as the mind's trickery, George Vaillant tells us, is actually healthy. What's more, it can reveal the mind at its most creative and mature, soothing and protecting us in the face of unbearable reality, managing the unmanageable, ordering disorder. And because creativity is so intrinsic to this alchemy of the ego, Vaillant mingles his studies of obscure lives with psychobiographies of famous artists and others--including Florence Nightingale, Sylvia Plath, Anna Freud, and Eugene O'Neill.</p>