The Lettres provinciales (Provincial letters) are a series of eighteen letters written by Frenchphilosopher and theologianBlaise Pascal under the pseudonym Louis de Montalte. They are a defense of JansenistAntoine Arnauld, a friend of Pascal's who in 1656 was condemned by the Faculté de Théologie at the Sorbonne in Paris for views that were claimed to be heretical. The first letter is dated January 23, 1656 and the eighteenth March 24, 1657. A fragmentary nineteenth letter is frequently included with the other eighteen.
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