"I’ll not ask you to do any such thing, monsieur," said Pontchartrain, "but some day when you are not so engaged—perhaps at the Countess’s salon —I should like to speak to you of what I do. You might know that Colbert, some years ago, paid the German savant Leibniz to build a machine that would do arithmetic. He was going to use this machine in the management of the King’s finances. Leibniz delivered the machine eventually, but he had in the meantime become distracted by other problems, and now, of course, he serves at the court of Hanover, and so has become an enemy of France. But the precedent is noteworthy: putting mathematical genius to work in the realm of finance."