Sinners have long cherished the fantasy that William Bennett, the virtue magnate, might be among our number. The news over the weekend -- that Bennett's $50,000 sermons and bestselling moral instruction manuals have financed a multimillion-dollar gambling habit -- has lit a lamp of happiness in even the darkest hearts. As the joyous word spread, crack flowed like water through inner-city streets, family court judges began handing out free divorces, and children lit bonfires of "The Book of Virtues," "More Virtuous Virtues," "Who Cheesed My Virtue?" "Moral Tails: Virtue for Dogs," etc. And cynics everywhere thought, for just a moment:...