Haecceity

Part of a series on
John Duns Scotus
Scotism Scholasticism Univocity Haecceity Immaculate Conception Beatific vision Formal distinction Hylomorphism Scotistic realism Substance theory (ousia) Accident Substantial form Quiddity (essence / nature) Individuation Existence of God Christology Platonic realism Categories (Aristotle) Problem of universals Metaphysics Christianity and slavery
Works Opus Oxoniense Tractatus de Primo Principio Quaestiones Quodlibetales
Influences Aristotle ("The Philosopher") St. Paul ("The Apostle") Pseudo-Dionysius St. Augustine ("The Theologian") St. Boethius Avicenna Peter Lombard ("The Master") Averroes ("The Commentator") Maimonides ("Rabbi Moses") St. Albertus Magnus ("The Universal Doctor") St. Thomas Aquinas ("The Angelic Doctor")
People Andreas Aureoli Balic Barnewall Baron Bonet Caracciolo Carletti Faber Ferchi Frassen Horan Mac Cathmhaoil Mastrius de Mayronis d'Orbellis Ó Fithcheallaigh Pelagius Punch Scotellus Scriptoris Thomae Sixtus IV Wadding
Related Aristotelianism Franciscan Order Oxford University Catholic theology List of Franciscan theologians Empiricism
Philosophy Portal Catholicism Portal
v t e

Haecceity (/hɛkˈsiːɪti, hiːk-/; from the Latin haecceitas, which translates as "thisness") is a term from medieval scholastic philosophy, first coined by followers of Duns Scotus to denote a concept that he seems to have originated: the irreducible determination of a thing that makes it this particular thing. Haecceity is a person's or object's thisness, the individualising difference between the concept "a man" and the concept "Socrates" (i.e., a specific person).^[1] In modern philosophy of physics, it is sometimes referred to as primitive thisness.^[2]