La Logique ou L'Art de Penser. Contenant, Outre les Regles Communes, Plusieurs Observations nouvelles, propres a former le jugement.
[ARNAULD, Antoine and Pierre Nicole].

Paris: Chez la Veuve Savoye, 1775. Nouvelle edition. Lightly browned, occasional faint spotting, otherwise a very good, tight copy. Contemporary mottled calf, gilt. Twelvemo. xlviii, 430 pp. (Item ID: 7082)


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.

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