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• There is no fool to the old fool. -- John Heywood
• There is no fool like an old fool -- you can't beat experience. -- Jacob Braude
• It has been said that there is no fool like an old fool, except a young fool.
  But the young fool has got to grow up to be an old fool, before he can realize what a damn fool he was when he was a young fool....
• Never was a patriot yet, but was a fool. -- John Dryden (1631-1700)
• There are two kinds of fool. One says, "This is old, and therefore good.
  And one says "This is new, and therefore better." -- John Brunner, "The Shockwave Ride...
• He who asks is a fool for five minutes, but he who does not ask remains a fool forever.
  -- Old Chinese saying...
• A fool with a tool is a well-equipped fool.
• Answer a fool according to his folly. -- Old Testament -- Proverbs xxvi, 5