But who can foresee such things? None of us can predict the final outcomes of our actions, and few of us even try; most of us just do what we do to prolong a moment's pleasure or to stop the pain. And even when we act for the noblest reasons, the last link of the chain all too often drips with someone's blood.
Everything's Eventual: 14 Dark Tales (ed. Scribner, 2002)