In 1963 I had been expelled from high school in New York. I spent more time in the coffeehouses of Greenwich Village than in class. Present any of my colleagues from the 1960s with a photo of me in front of a class teaching; they'd have told you it was absurd, laughed, and walked away. But, there I was in a tweed jacket, khaki pants, blue oxford button-down shirt, and regimental striped tie.