This entrepreneur doesn't shade the truth because he's a liar but because he lives in a future of wonderful possibilities.

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He testified that he pounded on a table and told the suspect he was a liar, but he denied physically abusing him.

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And of course Louise was always trying to make out that she could see them too, but she was such an awful liar that I never believed a word of it.

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Madoff is a liar and a thief, but he may have also provided Jeffry Picower with one of the largest zero-interest margin loans in history.

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But if he is not, then he is a convincing liar.

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As a previous biographer, Richard Hall, noted in 1974 in a more readable, but less substantial, life of Stanley, the man was a chronic liar.

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But the tragedy is not that dishonest borrowers and brokers signed off on liar-loans, greedy bankers packaged time bombs, yield hungry speculators bet on AAA-rated trash or that pandering politicians let taxpayers guarantee mortgages in the first place.

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He is not saying that any agency has actually sunk that low, but it raises a tricky moral question: is it all right to detect a liar with a lie?

ECONOMIST: Lie detectors