People have long been duped by "straight-talking" politicians, confessional talk-show hosts, and fake-earnest advertisers. As sincerity has become suspect, the upright and honest have taken refuge in irony. Yet our struggle for authenticity in back-to-the-woods movements, folksy songwriting, and a craving for plainspoken presidential candidates betrays our longing for the holy grail of sincerity.
Bringing deep historical perspective and a...