Related:

• Don't say the same thing more than once. It's redundant and repetitious.
• Not only to say the right thing in the right place, but far more difficult, to leave unsaid the wrong thing at the tempting moment.
  -- George Sala...
• I ALWAYS KNOW THE RIGHT THING TO SAY, after the right time to say it has passed.
• To say the right thing at the right time, keep quiet most of the time.
• DISCRIMINATE, v.i. To note the particulars in which one person or thing is, if possible, more objectionable than another.
  -- Ambrose Bierce, "The Devil's Dictionary...
• The only thing more crooked than politics is insurance.
• Never does nature say one thing and wisdom another. -- Juvenal, Satire
• The use of the right word is more important than the right argument.
• Wrong Thing n. A design, action, or decision that is clearly incorrect or inappropriate.
  Often capitalized; always emphasized in speech as if capitalized....