The strictest of teachers

From Nat Friedman:

For twelve months in 1998 and 1999, I went through this phase of trying to “diversify my interests,” and signed up to take piano lessons. My teacher’s name was Peter, this rigid Eastern European math major who instructed piano to idiots like me on the side. In our first lesson, I was showing off that I knew a few notes of Fur Elise, when he abruptly interrupted, shouting: “What? Beethoven? Do not try to express what you cannot understand!”