Because the truth is, we never know for sure about ourselves. Who we'll sleep with if given the opportunity, who we'll betray in the right circumstance, whose faith and love we will reward with our own....Only after we've done a thing do we know what we'll do, and by then whatever we've done has already begun to sever itself from clear significance, at least for the doer. Which is why we have spouses and children and parents and colleagues and friends, because someone has to know us better than we know ourselves. We need them to tell us. We need them to say, 'I know you, Al. You're not the kind of man who.