Related:

• Never frighten a little man. He'll kill you. -- Lazarus Long by Robert A Heinlei
• Never appeal to a man's "better nature." He may not have one.
  Invoking his self-interest gives you more leverage....
• Little girls, like butterflies, need no excuse. -- Lazarus Long, from Robert A.
  Heinlein's "Time Enough For Love...
• Never try to out-stubborn a cat. -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love
• Tilting at windmills hurts you more than the windmills.
  -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love...
• One man's "magic" is another man's "engineering." "Supernatural" is a null word.
  -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love...
• Your enemy is never a villain in his own eyes. Keep this in mind
  it may offer a way to make him your friend. If not, you can kill him without hate - and quickly....
• A touchstone to determine the actual worth of an "intellectual" -- find out how he feels about astrology.
  -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love...
• Always listen to experts. They'll tell you what can't be done, and why.
  Then do it. -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love...