Fervent Christians went into people’s houses and searched for books, statues and paintings that were considered demonic. This kind of obsessive attention was not cruelty. On the contrary: to restrain, to attack, to compel, even to beat a sinner was—if you turned them back to the path of righteousness—to save them. As Augustine, the master of the pious paradox, put it: “Oh, merciful savagery.”