La Logique ou L'Art de Penser. Contenant, Outre les Regles Communes, Plusieurs Observations nouvelles, propres a former le jugement.

Paris: Chez la Veuve Savoye, 1775 Nouvelle edition. . Contemporary mottled calf, gilt. . Twelvemo. Lightly browned, occasional faint spotting, otherwise a very good, tight copy. Although Arnauld and Nicole were strongly Cartesian in their emphasis on method rather than the theory of pure logic, their work forged a revolution in the study of logic, leaving behind both inadequate scholastic and outmoded Ramesian approaches. The most famous logic text of the seventeenth century, known as the Port-Royal Logic, it set the form of manuals of logic for the next two hundred years and every edition is distinct as changes and additions were incorporated constantly.