Related:

• Never get angry, never make a threat. Reason with people.
  -- Marlon Brando (in The Godfather, screenplay by Mario Puzo and Francis Ford Coppola) Don't carry a gun....
• Never hate you enemies, it affects your judgment. -- Michael Corleone
• Never argue with an angry person.
• A surefire way to get unwanted guests to leave is the threat of showing family pictures taken by an 8 mm camera by someone who never handled the thing before.
• I have never taken things on trust.
  I see no reason to make an exception in the case of a mysterious area of danger -- Avo...
• My schoolmates would make love to anything that moved, but I never saw any reason to limit myself.
  -- Emo Philip...
• The time to make up your mind about people is...never.
• You never get a second chance to make a first impression.