The Red and the Black
Stendhal (1783–1842) mistakenly ascribed to Malagrida the maxim "Words have been given to men in order to hide their thoughts" ("The Red and the Black", Part 1, XXII, epigraph), which go back to a remark by a capon made in a fable/dialogue written by Voltaire in 1763, often mistakenly attributed to Talleyrand.