Fallacies: Part 3, Book 4 of Summa Logicae

by William of Ockham, Richard Robinson (Translator), Peter King (Introduction)

Overview

Fallacies, by William of Ockham (AD 1287-1347), is the last book (Part 3, Book 4) of the Summa Logicae (Summary of Logic), a medieval textbook on syllogistic logic which is divided into three parts: terms, propositions and syllogisms, broadly speaking.

Fallacies is the medieval nominalistʼs response to Aristotleʼs Sophistical Refutations (De Sophisticis Elenchis). It treats of the fallacies of equivocation, amphibology, composition and division, accent, figure of speech, secundum quid et simpliciter, among others.

A Franciscan monk, philosopher and logician, William of Ockham is widely considered the father of nominalism. The Summa Logicae is his principal treatise on the subject. From a nominalistic point of view, it takes a fresh look at Aristotleʼs Categories, Interpretation and Topics as contained in the Organon; and it rejects the idea of universals as things having an independent existence outside the mind (as originally advanced by Plato).

On the cover is "Christ refuses the kingship," Fol. 16r sc. 1A: a miniature from the Speculum humanae salvationis illuminated manuscript, colored pendrawings on paper, c. 1400-1500.

Product Details

ISBN-13:	9798319660091
Publisher:	Barnes & Noble Press
Publication date:	08/11/2025
Pages:	180
Product dimensions:	5.00(w) x 8.00(h) x 0.41(d)

About the Author

A Franciscan monk, philosopher and logician, William of Ockham is widely considered the father of nominalism. The Summa Logicae is his principal treatise on the subject. From a nominalistic point of view, it takes a fresh look at Aristotle's Categories, Interpretation and Topics as contained in the Organon; and it rejects the idea of universals as things having an independent existence outside the mind (as originally advanced by Plato).

Peter King is Professor of Philosophy and of Mediaeval Studies, Department of Philosophy, at the University of Toronto, Canada.