Related:

• But even though they probably certainly know that you probably wouldn't, they don't certainly know that although you probably wouldn't there's no probability that you certainly would.
  -- Sir Humphrey Appleby on nuclear deterrence...
• What's not worth doing is not worth doing well. -- Don Hebb
• That you may retain your self-respect, it is better to displease the people by doing what you know is right, than to temporarily please them by doing what you know is wrong.
  -- William J.H. Boetcke...
• If at first you DO succeed, pretend you know what you're doing.
• When you do not know what you are doing, do it neatly.
• If you seem to know what you are doing, you'll be given more to do.
• It might be easy for you... but then you don't know what you're doing.
• When you don't know what you are doing, do it neatly.