The Deadly Perils of Predatory Idealism

How would people react if, on the third time their broken-down car was towed to the same repair shop for the same problem, the swaggering mechanic told them: “Sure — the engine doesn’t work today but — follow me on this — next year, you will drive from coast to coast, and get 90 miles to the gallon!”

Yet if a politician promises to fix the world, people applaud and follow him regardless of previous crashes.

Woodrow Wilson revolutionized the political exploitation of idealism. In his 1917 speech ...