Liars when they speak the truth are not

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• Aristotle was once asked what those who tell lies gain by it.
  Said he, "That when they speak truth they are not believed...
• A liar isn't believed even when he speaks the
  truth...
• He who does not bellow the truth when he knows the truth makes himself the accomplice of liars and forgers.
  French philosopher Charles...
• Every government is run by liars and nothing they say should be believed.
  I. F....
• Tis the mark of an instructed mind to rest assured with that degree of precision that the nature of the subject admits,
  and not to seek exactness when only an approximation...
• Piety requries us to honor truth above
  friends. ...
• The least initial deviation from the truth is multiplied
  later a thousandfold....
• Speak the truth, but leave immediately after. --
  Slovenian...
• FIB, n. A lie that has not cut its teeth. An habitual liar's nearest approach to truth:
  the perigee of his eccentric orbit. When David...