Rather than earn money, it was Thoreau's idea to reduce his wants so that he would not need to buy anything. As he went around preaching this ingenious idea, the shopkeepers of Concord hoped he would drop dead.
Richard ArmourShakespeare, who never could think up a plot by himself, found this one [Macbeth] in Holinshed's Chronicles, changing it just enough so that no one would recognize the source. He didn't count on the resourcefulness of modern scholars, who have to discover things like this to become associate professors.
Richard Armour