“And even a liar can be scared into telling the truth, same as honest man can be tortured into telling a lie.”

“No one believes a liar. Even when she's telling the truth.”

“Any fool can tell the truth, but it requires a man of some sense to know how to lie well.”

“That's what you get for telling the truth. Someone calls you a liar. Most people will accept a likely lie to an unlikely truth. In fact, they prefer it.”

“An untruth must be spoken, where need requires. For whether men lie, or say true, it is with one and the same object. Men lie, because they think to gain by deceiving others; and speak the truth, because they expect to get something by their true speaking, and to be trusted afterwards in more important matters. Thus, though their conduct is so opposite, the end of both is alike. If there were no gain to be got, your true-speaking man would tell untruths as much as your liar, and your liar would tell the truth as much as your true-speaking man.”

“Semiotics is in principle the discipline studying everything which can be used in order to lie. If something cannot be used to tell a lie, conversely it cannot be used to tell the truth: it cannot in fact be used "to tell" at all.”

“The same principle that forbids me to lie does not allow me to tell the truth.”

“One can insult an honest man or an honest woman, but to tell a thief that he is a thief is merely la constation d'un fait”

“Richard Nixon is a no good, lying bastard. He can lie out of both sides of his mouth at the same time, and if he ever caught himself telling the truth, he'd lie just to keep his hand in.”

“Champagne, if you are seeking the truth, is better than a lie detector. It encourages a man to be expansive, even reckless, while lie detectors are only a challenge to tell lies successfully.”