Upon Further Reflection. Chapter 9:How to Discover What You Have to Say: A Talk to Students. Quote 15

“For years, an electric clock on my desk ran only when the light was on, and I added a point to a cumulative record whenever the clock completed twelve hours. The slope of the curve showed me how much time I was spending each day (and how damaging it was to go off on a speaking tour!)” (p. 138)