Unbelievably, in 2025, walking among us are people, many of them young and college-educated, who believe the Industrial Revolution (spawned by the liberal Enlightenment) was a disaster for most of mankind. They yearn for what they imagine was the tranquil, plentiful, and happy communalism of the Middle Ages. I'm not referring only to people on the fringes. Glenn Greenwald, the cosmopolitan journalist who has done important reporting on civil liberties and foreign policy, recently lamented the...