Welcome to my web page. I am a professor of Philosophy retired from the University of Wisconsin at Parkside, and here you will find my thoughts, and various writing projects in progress, including a number of translations of medieval logical texts. If you want to use or copy something, as long as you give me due credit, feel free to do so. I hope you find something interesting.


Published Things — Books and Articles

“The  Place  of  Demonstratio  Potissima in  Some  sixteenth-Century  Accounts  of  Mathematics.” Raison et demonstration: Les commentaires mediévaux sur les Seconds Analytiques. Studia Artistarum. Études sur la Faculté des arts dans les Universités médiévales. 40. Edited by Joel Biard. Turnhout, Belgium: Brepols Publishers, 2015.

“Anthony  Coronel  and  Knowledge  Arising  from  Natural  Causation.”  Documenti  e  Studi  sulla Tradizione Filosofical Medievale. 17 (2009) 395-418.

Demonstration and Scientific  Knowledge  in William  of Ockham:  A Translation  of Summa  Logicae III-II:  De  Syllogismo  Demonstrativo,  and  selections  from  the  Prologue  to  the  Ordinatio.  Notre Dame, Indiana: University  of Notre Dame Press,  2007. This includes a long introductory study of medieval work on demonstration from Grosseteste and some of his predecessors through Albertus Magnus, Thomas Aquinas, and Duns Scotus, as  well  as  additional  translations  from  Giles  of  Rome  and  John  of  Cornwall.  Reviews: “His  careful  translation,  compilation  of relevant  documents,  and  impressive  history   of medieval empiricism should interest any scholar studying the history of philosophy of science.” *Alexander Hall, Journal of the History of Philosophy 46 (2008).  *Anne Davenport, Isis 99:4 (2008). “In sum, this is an outstanding introduction to and translation of Ockham’s treatises on or related to the demonstrative syllogism.  The commentary is illuminating, especially in those cases where Longeway makes abundantly clear why Ockham thought that the causal powers of things and causal relations can be known only by experience, and why he maintained that qualities can have causal powers.  These views support Longeway’s conclusion about Ockham as the founder of empiricism in the European tradition.” Andre Goddu, Notre Dame Philosophical Reviews, 2014.

“Aegidius  Romanus  and  Albertus  Magnus  vs.  Thomas  Aquinas  on  the  Highest  Sort  of Demonstration  (demonstratio  potissima).”  Documenti  e  Studi  sulla  Tradizione  Filosofica  Medievale. 13 (2002) 373-434.

“Nicholas  of Cusa  and Man’s  Knowledge  of  God.”  Philosophy  Research  Archives  13  (1987-88) 289-313.

“The  Rationality   of  Escapism and  Self-Deception.”  Behavior  and  Philosophy  18  no.  2  (Fall/Winter 1990) 1-20.

William Heytesbury: On Maxima and Minima. Chapter 5 of Regulae solvendi sophsmata with an anonymous  fourteenth-century  discussion.  Translated  with  an  introduction  and  study.  Synthese Historical Series. Dordrecht, Holland: Reidel Press, 1984. Reviews: Eleanore Stump, History and Philosophy  of  Logic  8  (1987)  85-87,  “Longeway’s  excellent  presentation…  gives  us  an  important  part of the  puzzle  as  we  continue  to  piece together  the  history   of philosophy  in  this  period.”  Peter  King, Philosophical Review 96 (1987) 146-149, “A solid contribution in a neglected field.” A. Pattin, Tijdschrift Voor Philosophie 49 (3): 539.  Edith Sylla, Isis 77 (1986) 710-711.

With Ebbesen (Supervising Editor), Del Punta, Izbicki, Serene and Stump. Simon of Faversham: Quaestiones  super  librum  Elenchorum.  Toronto:  Pontifical  Institute  of  Medieval  Studies,  1984.

Papers Read

“The  Place  of  Demonstratio  Potissima  in  Some  sixteenth-Century  Accounts  of  Mathematics,”  presented at  the  Colloque  sur  Les  traditions  médiévales  des  Seconds  Analytiques  (Centre  d’ études  supérieures de  la  Renaissance,  Université  François-Rabelais,  Tours,  France),    15-17  October  2012.  Arranged  by Joel Biard.

“Antony  Coronel  and  Knowledge  Arising  from  Natural  Causation,”  presented  at  Workshop  on Ancient and Medieval Commentaries on the Posterior Analytics. Scuola Normale Superiore,  Pisa, Italy , 6-9 July 2008. Arranged by Francesco Del Punta.

“Ekthesis  in  Aristotelian  Demonstration,”  presented  at  Marquette  University   conference  on  the Posterior Analytics, July, 2006.

“Mathematical Proof and Aristotelian Demonstration,” presented to “the Greeks,”  a reading group in  Greek  Philosophy  at  University   of  Wisconsin  at  Madison  led  by  Professor  Paula  Gottlieb,  Spring 2002.

“Simon  of  Faversham  and  esse  in  effectu.”  Presented  at  the  35th  International  Congress  on  Medieval Studies, Western Michigan University, Kalamazoo, Michigan, May 5, 2000.+

“William of Ockham on the Possibility of a Demonstrative Science of Demonstration.” Presented at  the  34th  International  Congress  on  Medieval  Studies,  Western  Michigan  University ,  Kalamazoo, Michigan, May 6, 1999.

“William of Ockham on the Possibility  of a Demonstrative  Science  of  Demonstration.”  Read  at  the Central Division Meeting of the American Philosophical Association, April 27, 1990.

Articles in Reference Works

“Simon  of  Faversham.”  “Commentaries on Posterior Analytics.”  “William of  Heytesbury.” In Springer Encyclopedia of Medieval Philosophy, edited by  Henrik Lagerlund (Springer, 2011).

“Mertonians.” In  The  Continuum  Encyclopedia of British Philosophy,  edited by  A.C. Grayling,  Andrew Pyle and Naomi Goulder (Continuum, 2006).

“Boëthius,  Anicius  Manlius Severinus (ca. 480 – 524 C.E.).” In Medieval Science, Technology and Medicine: An Encyclopedia. Edited  by Thomas F. Glick,  Steven  Livesey and  Faith  Wallis  (London:  Routledge,  2006).

“Heytesbury, William,” In  Encyclopedia  of  Philosophy,  2nd  ed. (Detroit:  MacMillan  Reference  USA,  2006), edited Donald Borchert. Vol. 4:350–351.

“Simon  of Faversham,” “William Heytesbury,”  “William of Sherwood.” In Blackwell Companion to Philosophy in the Middle Ages, edited by Jorge J.E. Gracia and Timothy B. Noone, (Blackwell,  2003).

“Heytesbury,  William,”  “Peter  of  Spain,”  “William of Sherwood,” and “John of Damascus.” In  The Routledge Encyclopedia of Philosophy  (Routledge  and Keagan Paul, 1998), edited by Edward  Craig.

“Gregory  I,”  “Adelard  of Bath,” “Jacob Boehme,” “Albert  of Saxony,”  “Robert Fludd,”  “John  of  Damascus,” “John  Scotus  Erigena,” Marsilius of  Inghen,” “Nemesius  of  Emesa,” “Nicholas  of  Cusa,”  “nihil  ex  nihilo  fit,”  “sensus  communis,” “Terminist Logic,” “William of Alnwick,” and “William of Auvergne.” In The  Cambridge  Dictionary  of  Philosophy  (Cambridge  University   Press,  1995)  edited  by Robert Audi.

“Peter  of  Spain” and  “William  of  Sherwood.” Dictionary  of  Literary  Biography,  Vol.  115:  Medieval Philosophers,  315–325,  360–363.  Edited  by  Jeremiah  Hackett.  Detroit  and  London:  Bruccoli, Clark and Layman, 1992.

“Medieval Philosophy.” In  The Reader’s Adviser, 13th ed., vol.  4  (Bowker: New York and London, 1988), 70-101. An annotated bibliography of sources in English. A revised version of the bibliography appeared in the 14th edition.

Articles  for  the  Stanford Internet Encyclopedia of Philosophy: “William of Heytesbury,” “Simon of Faversham,” “Medieval Theories of Demonstration.”

Reviews and Notes

Review of Alexander Broadie, Notion and Object (Clarendon Press: Oxford, 1989). International Studies in Philosophy 26 (1994) 102-103 .

Review of Alexander Broadie, Introduction  to  Medieval Logic (Clarendon Press: Oxford, 1987). International Studies in Philosophy 22 no. 3 (1990) 90-91.

Review  of  Niels  J.  Green-Pedersen,  The  Tradition  of  the  Topics  in  the  Middle  AgesThe Commentaries on Aristotle’s and Boethius’s ‘Topics’ (Munich and Vienna:  Philosophia  Verlag GmbH, 1984). History and Philosophy of Logic 8 (1987) 77-81.

Review  of  Norman  Kretzmann,  ed.,  Infinity  and  Continuity  in  Ancient  and  Medieval  Thought (Ithaca, N.Y.: Cornell University Press, 1982). The Philosophical Review 94 (1985) 263-265.

Review of Freddoso and Schuurman, Ockham’s Theory of Propositions: Part II of the Summa Logicae (NotreDame, Indiana: University of Notre Dame Press, 1980), and Gabriel Nuchelmans, Late  Scholastic  and  Humanist  Theories  of  the  Proposition,  (Amsterdam:  North  Holland,  1980).  The Philosophical Review 92 (1983) 302-304.

Review  of  Alluntis  and  Wolter,  John  Duns  Scotus:  God  and  Creatures.  The  Quodlibetal  Questions, (Princeton,   N.J.  and  L ondon:  Princeton  University   Press,  1975),  The  Philosophical  Review  92  (1983) 431-433.

Review of Martin M. Tweedale, Abailard on Universals (Amsterdam: North Holland Publishing Company, 1976). The Philosophical Review 90 (1981) 603-605.

With Kretzmann, Van Dyke and Stump. “Notes and Discussions:  L.M. De Rijk on Peter  of Spain.” Journal of the History of Philosophy 16 (July 1978) 325-333.

With  Kretzmann,  Van  Dyke  and  Stump.  Review  of  Peter  of  Spain  (Petrus  Hispanus  Portugalensis): Tractatus called afterwards Summule Logicales, First Critical Edition from the Manuscripts with an  introduction, by L.M. De Rijk, (Assen: Van Gorcum, 1972).  The  Philosophical  Review  84  (1975) 560-567.

Unpublished Things:

Mediaeval Philosophy


Faversham — Excerpts from Commentary on Peter of Spain’s Tractatus

Faversham — Questions on Porphyry

Faversham — Questions on De Interpretatione

Faversham — Questions on the Categories

Faversham — Questions on the Third Book of On the Soul

Faversham — Interventiones Scolaires

Faversham — Sophisma – A Universal is an Intention

Faversham — Notes from Patton

Translations of mediaeval works concerning the Posterior Analytics and demonstration.

Richard Rufus, Opinions on the Posterior Analytics

Pseudo Thomas, Concerning Demonstration

GundisalinusConcerning the Sciences: Chapter 2: The Logical Sciences

Al Farabi, from On the Origin of the Sciences, citations from Albertus Magnus

Al GazzaliTreatise on Logic: Proemium and Fifth Maneria

Al Kindi Introduction to the Art of Demonstration

Averroes, Nine Questions on Demonstration, with some letters of Averroes and other Arabs

Richard of Conington, Quodlibet I: Question 1:  Whether the middle term demonstrating in the highest way is the definition of the attribute or of the subject?

Walter Burleigh, Literal Commentary on the Posterior Analytics

Book I: Chapters 1-3     Chapters 4-6     Chapters 7-10      Chapters 11-13     Chapters 14-16     Chapters 17-20

Book II: Chapter 1     Chapters 2-5

Walter Burleigh, Questions on the Posterior Analytics

Question 1 Whether a logician can make a demonstration from first principles?

Question 2 Whether there is any demonstrative syllogism?

Question 3 Whether anyone can acquire any knowledge about anything new?

Question 4 Whether anyone can arrive at knowledge by natural means without divine illumination?

Question 5 Whether every demonstration is a syllogism productive of scientific knowing?

Question 6 It is asked whether it is required for knowledge strictly so-called to be a cognition of every cause?

Question 11 Whether the definition of the subject or the definition of the passion is the middle term in demonstration?

John of Cornwall, Questions on the Posterior Analytics

Book I: Questions 1 – 5

Book II: Question 9: Whether the middle term in demonstration is the definition of the subject or of the passion?

Chapters in a History of Philosophy

I-00 – Preliminary Material

I. Ancient Greek Philosophy

I-01 – Beginnings – Philosophy and Science

I-02 – Reality, Perception and the One

I-03 – The Sophists and Fifth-Century Athens

I-04 – Socrates and Some Successors

I-05 – Plato (part)

I-08 – Stoicism

I-09 – The Epicurean School

I – Bibliography for Ancient Greek Thought

II. Indian Philosophy

II-01 – Beginnings – The Vedas

II-02 – The Emergence of Philosophical Debate 1

II-04 – The Founding of Buddhism

II – Bibliography for Indian Thought

III. Chinese Philosophy

III-01 – Classical

IV. Early Christian Thought

IV-01 – Judaism

IV-02 – Iran and Later Judaism

IV-03 – The Formation of Christianity

IV-04 – The Growth and Establishment of Christianity

IV-05 – Christian Apologists

IV – Bibliography for Patristic Thought

V. Western Medieval Philosophy

V-01 – The Carolingian Period


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