Blaise PASCAL (1623-1662). Printed, [Les Provinciales], 1656; booklet of 8 pages in-4. First edition of the first Provinciales. [The Provinciales first appeared in 18 issues from January 23 to March 24, 1656]. Letter written to a provincial by one of his friends. On the subject of the present disputes of the Sorbonne. Paris January 23, 1656. Handwritten note at the head: "Letters of the Jansenists with some answers all of 656". Enclosed : [Charles DUFOUR], Letter of a parish priest of Rouen to a country parish priest, on the procedure of the Curez of the aforementioned city : Against the doctrine of some Casuists : to serve as an answer to a wording entitled : Answer of a theologian, etc. With the Requeste des Curez de Roüen, presented to Monsieur l'Official: Against Fathers Brisacier, Berrerd, and de la Brière, Jesuits, on October 26, 1656 (Paris, 1656, "On the copy printed in Roüen", 15 p.).