William of Ockham

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Related to William of Ockham: Ockham's Razor, Thomas Aquinas
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

William of Ockham


Born circa 1285 in Ockham, Surrey; died 1349 in Munich. English philosopher, logician, and religious and political writer. Representative of late Scholasticism.

A Franciscan monk, Ockham studied and taught at Oxford. In 1323 he was summoned to Avignon by Pope John XXII to respond to charges of heresy. He remained there for four years. He actively supported the head of the Franciscan Order, Michael of Cesena, in his dispute with the pope. From 1328, Ockham lived in Munich at the court of the pope’s adversary, Emperor Louis of Bavaria. According to legend, he told the emperor: “Defend me by the sword, and I will defend you by the pen.” In his political tracts, Ockham opposed the pope’s claims to secular power and the absolutism of ecclesiastical and secular authorities. He defended the principle of “evangelical poverty.” Many of his ideas anticipated the Reformation.

Ockham was the chief representative of nominalism in the 14th century. He asserted that only individual substances and their absolute qualities have real existence, and he proposed that, outside of thought, the universals are only names and terms signifying classes of names—terms of primary and secondary intention. “Real” sciences (those dealing with real objects) correspond to the terms of primary intention, and “rational” sciences (logic and grammar, for example) to the terms of secondary intention.

Ockham was one of the greatest logicians of the Middle Ages. In particular, he originated the idea that the meaning of a term is determined entirely by its function in an expression. In his theory of consequence he virtually distinguished between material and formal implication. He formulated the principle of the duality of conjunction and disjunction, and he asserted that primary cognition is intuitive and includes both external perception and introspection. Ockham insisted that concepts that cannot be reduced to intuitive knowledge and that cannot be verified experientially should be eliminated from science: “entities are not to be multiplied without necessity.” This principle, which came to be known as “Ockham’s razor,” played an important role in the struggle against medieval realism and the theory of “hidden qualities.” Believing that there can be no necessary link between individual substances, Ockham restricted the use of the concept of causation to empirical statements. He urged that philosophy and theology be divided into separate branches of study. Religious dogmas were defined by him as suprarational prescriptions relating not to reason but to faith and will. Like John Duns Scotus, he assigned will priority over reason. Ockham exerted a considerable influence on the subsequent development of logic and philosophy, especially on J. Buridan, Nicolaus of Autrecourt, and Hobbes.


Opera philosophica et theologica, vols. 1–2. Edited by S. Brown. St. Bonaventura, N.Y., 1967–70.
Opera politica, vols. 1–3. Edited by J. G. Sikes, R. F. Bennett, and H. S. Offler. Manchester, 1940–63—.


Abbagnano, N. Guglielmo di Ockham. Lanciano [1931].
Hochstetter, E. Studien zur Metaphysik und Erkenntnislehre W. von Ockham. Berlin-Leipzig, 1927.
Martin, G. W. v. Ockham. Berlin, 1949.
Baudry, L. Guillaume d’Occam: Sa Vie, ses oeuvres, ses idées sociales et politiques, vol. 1. Paris, 1949. (With references.)
Moody, E. A. The Logic of William of Ockham. New York, 1965.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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(35) William of Ockham, 'The Work of Ninety Days', chapter 26, pp.
On the other hand, nominalists such as William of Ockham and Pierre d'Ailly stressed reason's priority over nature and its constructive function in achieving a sufficient knowledge of human rights and duties.
Another transhistorical change concerns the demystification of "orthodoxy." In premodernity, a facile equation of orthodoxy with Truth is discernible (see the discussion of William of Ockham by Takashi Shogimen).
He dedicated a work to St Thomas Aquinas, and an important early piece to the fourteenth-century English thinker William of Ockham, inventor of the intellectual maxim Ockham's Razor--which advises against the needless multiplication of entities.
He trusts Aristotle and the faculties of the Philosopher's remarkable logical intelligence, as well as the late Scholastics, who lived, studied, and wrote on the edge between the Middle Ages and the early-modern era: let us mention William of Ockham, the founder of modern epistemology, as the main example.
He traces the origins of this debate to that between Thomas Aquinas and William of Ockham in the High Middle Ages.
This is the Flavin of 1963's the nominal three (to William of Ockham), the Flavin that dedicated a work to Robert Ryman and his executive summaries of pictorial labor.
It is during this period (1325) that Guido Vernani was given by the Pope the task of reading and explaining to laity and clergy Pope John XXII's bull of excommunication of Ludwig, and it is in this spirit that the Dominican canonist conceived the Refutation as one of a number of reprobationes that the Guelphs were to use in order to rebut imperial treatises such as those of Marsiglio of Padova and William of Ockham.
William of Ockham was a force in questioning much of what he considered to be the overly abstruse and technical dissertations of Anselm, Duns Scotus, Thomas Aquinas, and others.
[Editor's note: Occam's or Ockham's Razor is a principle attributed to the 14th century logician William of Ockham: Of two competing theories or explanations, all other things being equal, the simpler one is to be preferred.]
Rounding out the volume are the following articles: Ellie Ragland, 'The Supposed Nominalism of William of Ockham and the Lacanian Real' (pp.
Colish, "Peter Lombard"; Michael Robson, "Bonaventure"; Fergus Kerr, "Thomas Aquinas"; Oliver Davies, "Later Medieval Mystics"; Takashi Shogimen, "Academic Controversies"; Alexander Broadie, "Duns Scotus and William of Ockham"; Euan Cameron, "The Waldenses"; Gerhard Rottenwohrer, "Dualism"; Matthew S.