On an episode of Uncommon Knowledge recorded in 1999, I asked Milton Friedman to explain—and defend—libertarianism. He acquitted himself brilliantly, needless to say, but also proved warm, funny, and conversational, treating me with the same courtesy, intermixed with rigor, that he was famously display toward generations of students. (I’d have represented a very slow student, but still.) A lovely last look at a magnificent man .