Work
Port-Royal Logic
Overview
Port-Royal Logic, or Logique de Port-Royal, is the common name of La logique, ou l'art de penser, an important textbook on logic first published anonymously in 1662 by Antoine Arnauld and Pierre Nicole, two prominent members of the Jansenist movement, centered on Port-Royal. Blaise Pascal likely contributed considerable portions of the text. Its linguistic companion piece is the Port-Royal Grammar (1660) by Arnauld and Lancelot.
The book helped popularize the concept that a definition with more qualifications or features (the intension) denotes a class with fewer members (the extension), and vice versa. It was based on Aristotle's ideas about genus and species. The same concept would later become a fundamental element in the works of Gottfried Wilhelm Leibniz.
Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).
Philosophers who discussed Port-Royal Logic
Related ideas
- Gottfried Wilhelm Leibniz
- Cartesianism
- Intension
- Metaphysics
- Antoine Arnauld
- René Descartes
- Aristotle
- Ian Hacking
- Meditations on First Philosophy
- Scholasticism
- Blaise Pascal
- Michel Foucault
- The Order of Things
- Jansenism
- Epistemology
- Port-Royal Grammar
- Extension (predicate logic)
Place in the tradition
Part of French philosophy.