You did not want the Puritans to give you a block party if you'd moved into the neighborhood against their wishes. When Mary Dyer, who'd been exiled from the Massachusetts Bay Colony for her Quaker beliefs, and the public nuisance she made defending them, returned in 1660, the authorities hanged her.
Her story comes early in "Head and Heart," Garry Wills's history of religion in the United States, Colonial to contemporary. Encyclopedic in detail, the book ignores the wisdom of brevity Wills heeded in his recent books on Jesus and Saint Paul. There are more ministers' names here than on the guest list at a divinity-school reunion. That reservation aside, this is a worthy guidebook. Definition is the first step to comprehension, and Wills deftly defines the two great tides of American faith, what he calls "Enlightened" and "Evangelical" religion.