Related:

• Fools are certain, but wise men hesitate.
• Wise men learn much from fools. Wise guys don't.
• Wise men learn more from fools than fools from the wise. CATO
• Cato used to assert that wise men profited more by fools than fools by wise me
  for that wise men avoided the faults of fools, but that fools would not imitate the good examples of wise men....
• Fools make feasts and wise men eat them. -- Poor Richard
• Wise men don't need advice. Fools don't take it. -- Ben Frankli
• Wise men make proverbs, but fools repeat them. -- Samuel Palme
• Ceremony is the invention of wise men to keep fools at a distance. Richard Seele
• As ceremony is the invention of wise men to keep fools at a distance, so good breeding is an expedient to make fools and wise men equal.
  -- Steele...