" The best lesson from the myths of Newton and Archimedes is to work passionately but to take breaks. Sitting under trees and relaxing in baths lets the mind wander and frees the subconscious to do work on our behalf. Freeman Dyson, a world-class physi- cist and author, agrees: “I think it’s very important to be idle...people who keep themselves busy all the time are generally not creative. So I am not ashamed of being idle. "