"No one is so wrong as the man who knows all the answers."

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A man met a lad weeping. "What do you weep for?" he asked. "I am weeping for my sins," said the lad. "You must have little to do," said the man. The next day, they met again. Once more the lad was weeping. "Why do you weep now?" asked the man. "I am weeping because I have nothing to eat," said the lad. "I thought it would come to that," said the man.

— Robert Louis Stevenson