God occupies our nation's consciousness, even defining to many what it means to be American. Nonbelievers have often had second-class legal status and have had to fight for their rights as citizens. As R. Laurence Moore and Isaac Kramnick demonstrate in their sharp and convincing work, avowed atheists were derided since the founding of the nation. Even Thomas Paine fell into disfavor and his role as a patriot forgotten. Popular Republican...