[G]ood people don't spend much time being good, mostly they want to mow the lawn and play with the dog, whereas bad people spend all their time being bad, or thinking up ways to be worse. Then, one day, the good people have to turn around and do something, or the whole thing will go off the cliff.
Alan Furst, author of several best-selling novels about espionage, set in Europe before and during World War II. From an interview posted at TCS Daily.