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• Do nothing unless you must, and when you must act -- hesitate.
• Do whatever you like, but not here.
• If there's ever anything I can do for you -- or, more to the point, to you, don't hesitate to ask.
  *What?* Which word didn't you understand?...
• Congratulations! You are the one-millionth user to log into our system.
  If there's anything special we can do for you, anything at all, don't hesitate to ask!...
• Do whatever you want. You don't matter.
• You never hesitate to tackle the most difficult problems.
• Whatever you do will be insignificant, but it is very important that you do it. -- Mahatma Gandhi