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• The principal mark of genius is not perfection but originality, the opening of new frontiers.
• Adam and Eve had many advantages, but the principal one was that they escaped teething.
  -- Mark Twai...
• Flawed to perfection.
• If you pick up a starving dog and make him prosperous, he will not bite you.
  This is the principal difference between a dog and a man....
• If you pick up a starving dog and make him prosperous, he will not bite you
  hat is the principal difference between a dog and a man. -- Mark Twai...