“What were your most memorable moments at university?”
“There was a man called Walter Ullmann who taught medieval critical philosophy at 10am – and there was standing room only. I went every week, regardless of how wasted I’d got the night before, because he was brilliant.” THE
Reminds me of people queueing to get into to listen to Isaiah Berlin. Some merit as a metric: standing room only. (Until H&S arrive)
PS. And, for another example, see this from a recent book review of a biography of Enrico Fermi (The Last Man Who Knew Everything: The Life and Times of Enrico Fermi, Father of the Nuclear Age. By David Schwartz).
[the author]..He interviewed many of Fermi’s students and colleagues, shedding light also on Fermi the educator (his lectures were so renowned that even notes taken by his assistants were a bestseller).