One reason is that the limited devolution of power from Paris to the provinces in the 1980s has increased regional politicians' powers of patronage: hence the fall into temptation in the 1990s of Alain Carignon, mayor of Grenoble, and Michel Noir, mayor of Lyons, both of whom went to prison.

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Also, they need to adhere to the other strictures of the Maastricht treaty and not fall into the temptation of abandoning the Euro.

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Let's resist the temptation to fall back on the same partisanship and pettiness and immaturity that has poisoned our politics for so long.

CNN: Transcript: 'This is your victory,' says Obama

Let us resist the temptation to fall back on the same partisanship and pettiness and immaturity that has poisoned our politics for so long.

NPR: Transcript Of Barack Obama's Victory Speech

Others who are lax about calibration and controls as they rush to publish can fall prey to the temptation to cherry pick data to advance their careers by presenting a breakthrough finding.

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Any good poker player knows the worst temptation is to fall in love with the hand you're dealt.

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Central bankers can fall prey to the same temptation.

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The temptation is to think that, as real rates fall, the present value of housing must rise.

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