Jeff Jacoby: Created by God to be Good - '...in a world without God, there is no obvious difference between good and evil. There is no way to prove that even murder is wrong if there is no Creator who decrees "Thou shalt not murder." It certainly cannot be proved wrong by reason alone. One might reason instead -- as Lenin and Stalin and Mao reasoned -- that there is nothing wrong with murdering human beings by the millions if doing so advances the Marxist cause. Or one might reason from observing nature that the way of the world is for the strong to devour the weak -- and that natural selection favors the survival of the fittest by any means necessary, including the killing of the less fit...'