For committed free-thinkers, the limitations of reverence as a philosophical position appeared obvious. (“Piety,” once a virtue, tends to carry exclusively negative connotations among those who don’t like to be told what to do.) But, on balance, it created a productive anxiety for the arts. The supreme difficulty of doing justice to so much suffering and so much death before such a tough audience inspired more than one writer’s finest work; anxiety is what gave productions as reticent as W.G. Sebald’s The Emigrants and as scabrous as Mel Brooks’ The Producers their ethical charge. (Not, anxiety compels me to add, that it was any consolation.)