Susan Jacoby, Journalist/Author, "Freethinkers: A History of American Secularism," and most recently, "Never Say Die: The Myth and Marketing of the New Old Age" is tonight's Greatest Mind. Forty years ago - very few politicians flaunted their religious beliefs for personal gain. So what's changed - and what's given rise to the Christian Right in American politics? Her latest piece is - How The Founders Ensured America Would Not Be a Christian Nation.