In Augustine's Leaders, Peter Iver Kaufman works from the premise that appropriations of Augustine endorsing contemporary liberal efforts to mix piety and politics are mistaken--that Augustine was skeptical about the prospects for involving Christianity in meaningful political change. His skepticism raises several questions for historians. What roles did one of the most influential Christian theologians set for religious and political leaders? What expectations did he have for emperors, statesmen, bishops, and pastors? What obstacles did he presume they would face? And what pastoral,...