Professor Wolff has written a celebrated book about socialism. And when asked for an economic success story, he points to Germany, home of Mercedes-Benz and Adidas, one of the most thoroughly capitalistic countries ever to have existed. “But the Germans have free college,” Professor Wolff says. That isn’t quite true in any case — though there is no tuition as such at state schools, there are fees — but it also is a fact that Germany enrolls about half as much of its population in college as the United States does, controlling admissions with entrance exams and other credentials. I would very much like to see Professor Wolff and his allies trying to sell “College is almost free, but most of you can’t go” to idealistic young American leftists. He insists that young Americans are being crushed by student-loan debt “that they can never hope to repay,” when in fact the average student debt is about as big a burden as buying a reasonably well-appointed Toyota Camry, something young Americans manage to do with some regularity — without the benefit of federally subsidized interest rates and a very long repayment schedule. The average monthly student-loan payment is $393. Pardon me if I don’t sing a number from Les Misérables.