The Greek storyteller, Aesop, told of a father who took his son and set off to market.  The son rode a donkey, and the father led the animal.  When they passed through the first town, people commented, "What a lazy boy.  Imagine, riding while his father walks."  The father heard the criticism and changed places.  At the next town, people called out, "Old man, how dare you ride and let your son walk!"  The father again responded to the criticism by getting off the donkey, and then both walked.  Coming to a third town, the father heard people whisper, "How crazy can you get?  Two people walking and letting the donkey carry nothing!" 

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