Secularists are wrong when they ask believers to leave their religion at the door before entering into the public square. Frederick Douglass, Abraham Lincoln, Williams Jennings Bryan, Dorothy Day, Martin Luther King - indeed, the majority of great reformers in American history - were not only motivated by faith, but repeatedly used religious language to argue for their cause. To say that men and women should not inject their "personal morality" into public policy debates is a practical absurdity.