Milton Friedman's 90th birthday on July 31st provides an occasion to think back on his role as the pre-eminent economist of the 20th century. To those of us who were privileged to be his students, he also stands out as a great teacher.
When I was a graduate student at the University of Chicago, back in 1959, one day I was waiting outside Professor Friedman's office when another graduate student passed by. He noticed my exam paper on my lap and exclaimed: "You got a B?"
"Yes," I said. "Is that bad?"
"There were only two B's in the whole class," he replied.
"How many A's?" I asked.
"There were no A's!"
Today, this kind of grading might be considered to represent a "tough love" philosophy of teaching. I don't know about love, but it was certainly tough.
Professor Friedman also did not let students arrive late at his lectures and distract the class by their entrance. Once I arrived a couple of minutes late for class and had to turn around and go back to the dormitory.
All the way back, I thought about the fact that I would be held responsible for what was said in that lecture, even though I never heard it. Thereafter, I was always in my seat when Milton Friedman walked in to give his lecture.
On a term paper, I wrote that either (a) this would happen or (b) that would happen. Professor Friedman wrote in the margin: "Or (c) your analysis is wrong."
"Where was my analysis wrong?" I asked him.
"I didn't say your analysis was wrong," he replied. "I just wanted you to keep that possibility in mind."
Perhaps the best way to summarize all this is to say that Milton Friedman is a wonderful human being -- especially outside the classroom. It has been a much greater pleasure to listen to his lectures in later years, after I was no longer going to be quizzed on them, and a special pleasure to appear on a couple of television programs with him and to meet him on social occasions.
Milton Friedman's enduring legacy will long outlast the memories of his students and extends beyond the field of economics. John Maynard Keynes was the reigning demi-god among economists when Friedman's career began, and Friedman himself was at first a follower of Keynesian doctrines and liberal politics.