"Qu'on me donne six lignes écrites de la main du plus honnête homme, j'y trouverai de quoi le faire pendre." -- attriubuted to Cardinal Richelieu (b. 1585-09-09, d. 1642-12-04) nearly every place I've seen it, but Wikiquote notes that the attribution is disputed.
Translation: "If you give me six lines written by the hand of the most honest of men, I will find something in them which will hang him."