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39Walter Burley and the Obligationes attributed to William of SherwoodHistory and Philosophy of Logic 4 (1-2): 9-26. 1983.The history of the mediaeval obligationes-literature has only recently begun to be studied. Two important treatises in this literature, one by Walter Burley and the other attributed to William of Sherwood, have been edited by Romuald Green in a forthcoming book. But there is considerable doubt concerning the authenticity of the text attributed to Sherwood. The correct attribution and dating of this treatise is crucial for our understanding of the history of this literature. In this paper, we arg…Read more
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26Five Texts on the Mediaeval Problem of Universals: Porphyry, Boethius, Abelard, Duns Scotus, OckhamHackett Publishing. 1994.New translations of the central mediaeval texts on the problem of universals are presented here in an affordable edition suitable for use in courses in mediaeval philosophy, history of mediaeval philosophy, and universals. Includes a concise Introduction, glossary of important terms, notes, and bibliography.
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28Language and Logic in the Post-Medieval Period. By E.J. Ashworth. Dordrecht, Holland: D. Reidel Publishing Company. 1974. Pp. xvi, 304. $39.00 (review)Dialogue 15 (2): 333-340. 1976.
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17Ockham on Terms of First and Second Imposition and Intention, with Remarks on the Liar ParadoxVivarium 19 (n/a): 47. 1981.
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Peter of Ailly : Concepts and Insolubles. An Annotated TranslationTijdschrift Voor Filosofie 44 (4): 730-730. 1982.
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101What I want to talk about here is a puzzle for historians of philosophy who, like me, have spent a fair amount of time studying the history of mediaeval logic and semantic theory. I don’t know how to solve it, but in various forms it has come up repeatedly in my own work and in the work of colleagues I have talked with about it. I would like to share it with you now.
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10An alternative to Brian Skyrms' approach to the LiarNotre Dame Journal of Formal Logic 17 (1): 137-146. 1976.
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The Mediaeval Liar: A Study of John Buridan's Position on the Paradox, with a Catalogue of the "Insolubilia"--Literature of the Middle AgesDissertation, University of Toronto (Canada). 1972.
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29Robert Fland's Insolubilia: An edition, with comments on the dating of Fland's worksMediaeval Studies 40 (1): 56-80. 1978.
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45From Guillelmi de Ockham, Summa logicae, Philotheus Boehner, Gedeon Gál and Stephanus Brown, ed., (“Guillelmi de Ockham Opera philosophica et theologica,” OPh I; St. Bonaventure, N.Y.: The Franciscan Institute, 1974), pp. 744–.
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33In the summer of 1980, I was privileged to be on the teaching staff of the Summer Institute on Medieval Philosophy held at Cornell University under the direction of Norman Kretzmann and the auspices of the Council for Philosophical Studies and the National Endowment for the Humanities. While I was giving a series of lectures on supposition theory, I went to my office one morning, and there under the door some anonymous wag from the Institute had slid the pen and ink drawing you see in the graphi…Read more
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36Ockham's Nominalist Metaphysics: Some Main ThemesIn P. V. Spade (ed.), The Cambridge Companion to Ockham, Cambridge University Press. 1999.
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92Walter Burley, from the Beginning of his Treatise on the Kinds of Suppositon (De suppositionibus)Topoi 16 (1): 95-102. 1997.(1) (p. 31) (1.1) “Some things that are said are said with complexity, and others are said without complexity.”3 Those that are said without complexity are, for example, ‘man’, ‘animal’. Those that are said with complexity are, for example, ‘A man runs’, ‘An animal runs’.4 (2) It is plain from this that the incomplex is part of the complex.
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15Lies, language, and logic in the late Middle Ages (edited book)Variorum Reprints. 1988.'This sentence is false' - is that true? The 'Liar paradox' embodied in those words exerted a particular fascination on the logicians of the Western later Middle Ages, and, along with similar 'insoluble' problems, forms the subject of the first group of articles in this volume. In the following parts Professor Spade turns to medieval semantic theory, views on the relationship between language and thought, and to a study of one particular genre of disputation, that known as 'obligationes'. The fo…Read more
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36The manuscript Venice, Biblioteca Nazionale Marciana, Class XI n. 12, Zanetti Latini 301 (= 1576), contains on fols. 1r–24v a seemingly unique copy of a series of fifteen logical questions, ten on obligationes and the remaining five on insolubilia.1 The series on obligationes is untitled and unattributed in the manuscript, but the questions on insolubilia begin (fol. 18r11) “Incipiunt quaestiones super insolubilibus,” and are attributed at the end to a certain John of Wesel (fol. 24v41): “Ergo e…Read more
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