As the baffling and then burlesque and then baroquely burlesque affair enveloping General Petraeus and his friends, of both sexes, fell upon us like another hurricane last week, it seemed to confirm once again Philip Roth’s fifty-year-old assertion that you can’t write good satirical fiction in America because reality will quickly outdo anything you might invent. The Petraeus story rapidly expanded, novella-like, into a kind of “Fifty Shades of Khaki.”

In Comment this week, Adam Gopnik writes about the Petraeus scandal, Philip Roth’s retirement from novels, and human nature.