Medieval Philosophy Network, 19th Meeting
3 July 2018
 The Bing room | The Warburg Institute | University of London | School of Advanced Study | Woburn Square | London WC1H 0AB
 
 
* * *

11:45 - 12:45  Barbara Bartocci (University of St Andrews)
“Should we, or should we not, trust Socrates? Theories of Paradox in Fourteenth-Century Logic”
 
 12:45 - 14:15     Lunch break
  
14:15 - 15:15 Lydia Schumacher (King’s College London)
“The Early Franciscan Doctrine of the Hypostatic Union: A Key Intervention in Medieval Debates about the Metaphysics of the Incarnation”
 
15:15 - 16:15 Brian Embry (University of Groningen)
“Carving the Beast of Reality. Francisco Suárez on Categorizing Modes and Other Substances”
 
16:15     Conference ends
 
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ABSTRACTS:

“Should we, or should we not, trust Socrates? Theories of Paradox in Fourteenth-Century Logic”

By Barbara Bartocci (University of St Andrews)
 
If we suppose that Socrates utters ‘Socrates utters a falsehood’ and nothing else, should we trust Socrates or not? In my paper, I will briefly deal with 14th-century theories of paradox, with a special emphasis on Paul of Venice’s treatise on insolubilia, which is one of the main foci of the project “Theories of Paradox in Fourteenth-Century Logic: Edition and Translation of Key Texts”, led by Professor Stephen Read and financed by the Leverhulme Trust. One of the main aims of this project, indeed, is the publishing of a critical edition and English translation of Paul of Venice’s treatise on Insolubilia, which will be based on the 1499 Venice edition and on the only known manuscript preserving Paul’s text (Vat. Lat. 2132, ff. 236ra-245vb). In his Tractatus de insolubilibus, which closes his massive Logica Magna (written in the 1390s), in addition to his own view, Paul summarised and scrutinized 14 unattributed opinions about insolubles which were held by authors preceding or contemporary to him. Unfortunately, no modern editions of this work exist. Thus, scholars who want to read Paul’s text have to leaf through the folios of the early printed edition (1499). This, however, is not completely reliable, as will be shown by analysing some baffling passages in it. The establishment of a reliable text of Paul’s treatise will constitute a milestone for shedding more light on the medieval tradition of the insolubilia. Moreover, Paul’s taxonomy will be even more valuable when more of the work of the authors of the various opinions has been examined. This will be possible by studying authors who have not so far been taken into account by scholars. I will consider particularly the case of Blasius of Parma, specifically his treatment of the ‘Liar Paradox’ in comparison with Roger Swyneshed’s and in light of Paul’s list. 

“The Early Franciscan Doctrine of the Hypostatic Union: A Key Intervention in Medieval Debates about the Metaphysics of the Incarnation”
 
By Lydia Schumacher (King’s College London)
 
In the second half of the thirteenth century, Thomas Aquinas and John Duns Scotus championed very different accounts of the hypostatic union, which have been closely associated with their respective intellectual legacies ever since. Scholars past and present have tended to treat these accounts as mutually exclusive alternatives, only one of which can claim to be doctrinally sound. My purpose in this paper is to demonstrate that both models of the hypostatic union prove plausible when interpreted in relation to their respective intellectual contexts. The key to offering this interpretation, I will argue, is the study of the treatise on the Incarnation in the Summa Halensis, a text that was collaboratively authored by first-generation Franciscan scholars between 1236-45/56—twenty years before Thomas Aquinas even set his hand to the task of composing his magisterial Summa Theologiae. This long-neglected Summa was the first to formulate the theory of the hypostatic union which is generally credited to Scotus, and it did so on the basis of metaphysical assumptions that differ quite significantly from the ones that prevailed at the time of Aquinas. For this reason, I will demonstrate, the study of this text in its context highlights particularly effectively the varying terms on which the Franciscan and Dominican accounts must be interpreted and the tenability of each account within its own frame of reference.

“Carving the Beast of Reality. Francisco Suárez on Categorizing Modes and Other Substances”

By Brian Embry (University of Groningen) 

​Medieval Aristotelians typically divide the world into substances and accidents. Descartes replaces Aristotelian accidents with modes, and he divides the world into substances and modes. But Descartes borrows the notion of a mode from his scholastic near-contemporaries. Francisco Suárez, for example, endorses a conception of modes very similar to Descartes’s. The presence of modes in an Aristotelian ontology raises a question about where to place them in the categories. Do modes constitute a new category of accident, next to the other nine? Do they fall under various categories of accident? Or should the substance/accident ontology be replaced entirely with a thing/mode ontology? The purpose of this paper is to explain the place of modes in Suárez’s division of the world into kinds. I first explain what Suárez thinks a category system is, and then I explain the rules according to which Suárez “carves the beast of reality.” What emerges is not only an answer to the question how to categorize modes, but also a detailed theory of the categorical structure of reality. 

***
​
11:30-13:00 William Simpson (University of Cambridge)
’What’s the matter? Power, entanglement and the dappled world’
 
Commentator: Daniel De Haan (University of Cambridge)
 
 
13:00-14:15 Lunch break
 
 
14:15-15:15 Giovanni Catapano (University of Padua)
‘Augustine on the existence of ideas of individuals’
 
 
15:15-16:15 Andreea-Maria Carrez (Université Paris-Sorbonne )
‘From immaterial essences to material cosmos: the case of planetary gods in Iamblichus's metaphysics’
 
 
16:15-16:45 Coffee/Tea break
 
 
16:45-17:45 Jonathan Morton (King’s College London)
'Why should philosophers care about allegory? The Romance of the Rose as philosophical poetry'
 
 
17:45 Conference ends
 
* * *

ABSTRACTS:

What's the matter? Power, entanglement and the dappled world.

By William Simpson 
 
In this paper I am seeking to provide an empirically adequate neo-Aristotelian ontology of powers that is compatible with quantum mechanics, whilst challenging two assumptions commonly held by contemporary philosophers.
 
In the first part of the discussion, I pose a 'problem of nonlocal powers', which is raised by quantum phenomena like superpositions and entanglement. I claim that this problem can be overcome by abandoning the assumption of *primitive physicalism*, which reifies physical properties like mass, spin and charge, and by adopting an ontology of power-atoms with primitive powers of motion, in which the wave function used to predict nonlocal phenomena is grounded in a global structural power. This structural power determines the motions of the power-atoms and is encoded within the network of ontological dependencies that exists between their primitive powers.
 
In the second part of this paper, I pose a 'problem of perceptual holism', which is raised by the holistic character of quantum physics.
By dissolving local connections between the perceptual beliefs of scientists and the behaviours of their measuring devices, quantum holism undermines any empirical reasons for believing that quantum mechanics describes reality. I suggest that this problem may be averted by abandoning the assumption of *physical fundamentalism* and upgrading the ontology to include a variety of local structural powers.
 
I consider some problems that arise for an ontology seeking to hold together both local and global structural powers, and suggest solutions that appeal to the nature of causal powers.

Augustine on the Existence of Ideas of Individuals

​By Giovanni Catapano 

Abstract: The Letter 14 to his friend Nebridius is the only place in all his writings where Augustine tackles the problem of the existence of ideas of individuals. In the divine Word, he argues, there is just one idea of the human being as such, but at the same time there are the ideas of many human individuals, insofar as these individuals are parts of a whole. Likewise, in the human mind there is one idea of the angle as such, but at the same time there are the ideas of the four angles that make up a square.

From immaterial essences to material cosmos:
the case of planetary gods in Iamblichus's metaphysics
 
By Andreea-Maria Carrez
 
Iamblichus, the head of the Neoplatonician school of Apamea, faces the questions of Porphyry about the divinity of planets as corporeal beings in his De Mysteriis. In opposition to the plotinian dualistic paradigm of matter and bodies as threats to the unity of the soul, Iamblichus (and Proclos after him) intends to rehabilitate the notion of corporeality in a way that would both assert immateriality's superiority over materiality and offer a relevant theory to theurgy. This dispute of the uttermost importance takes place in a critical philosophical, theological and historical context (the christianization of the IIIth and IVth centuries' Empire) to which Iamblichus responds with a concordist attitude, insisting on symphonia between all philosophical traditions and pagan cults. As a result, the questioning of the limits between the divine and the non-divine and the definition of their respective characteristics appear as a demanding task for « the savior of the entire Greek world », as Julian the Emperor called him. Facing Porphyry's interrogations and doubts, emphasizing what he considers as an internal contradiction, Iamblichus intends to demonstrate in his De Mysteriis that the concept of divine body is no oxymoron.
 
But how can the planets be gods, if gods are supposed to be strictly incorporeal? How does it affect Iamblichus's concept of divinity? Are celestial bodies actualized potencies, results of ousiai and noemata according to him? To what extent can they be both gods and living beings, if all divine beings are immortal, eternal, invisible and immune to corruption and pathos, and if bodies are necessarily bound to a beginning and an end, corruptible and visible? Do immaterial gods and the cosmos share the same nature according to Iamblichus? Are they considered as the One's germinative ennoiai, but if so, how can he avoid to identify the One with the Intellect? Does the gods' immateriality involve their transcendance of the material world, or are they considered to be immanent, which would suggest a monist turnover in Iambichus's thought? Can the influence of these planetary gods be both benevolent and malevolent, and if so, does it imply that evil would be part of divinity?
 
'Why should philosophers care about allegory?
The Romance of the Rose as philosophical poetry'
 
By Jonathan Morton 
 
The Romance of the Rose is one of the great literary monuments of thirteenth-century Europe. While its affinities to medieval philosophy, especially which of the University of Paris, have long been noted, that recently scholars have been paying closer attention to the specifics of the French poem's philosophy. But how can a work of allegory, by definition polysemous, be philosophical? Looking at the poem's style in relation to medieval dialectic and thinking about the intellectual context of the 1270s when Jean de Meun wrote his vast section of the Rose, this paper will suggest ways in which the work can convey meaning and consider the question of whether and how it makes sense to talk of poetry as philosophical.
 

Medieval Philosophy Network, 16th Meeting
14 July 2017
Cornwall Room | British Academy |10-11 Carlton House Terrace |SW1Y 5AH | London
 
  * * *
 
13:30 - 14:30 Giovanni Ventimiglia (University of Lucerne )
‘Aquinas on Being: two or three Senses of Being?’
 
14:30 - 15:00 Stephen Read (University of St Andrews)
Thomas Maloney's translation of Lambert of Auxerre's Logica (Notre Dame UP 2015) – a critical discussion.
 
15:00 – 15:30   Coffee break              
           
15:30 - 16:30 Anna Marmodoro (University of Oxford)
    ‘Plotinus on Perception’
 
16:30 - 17:00 John Marenbon (University of Cambridge)
Alain de Libera, L’Archéologie philosophique (Paris : Vrin, 2016) – a critical discussion.
 
17:00  Conference ends
 
 
* * *
​Abstract:

Aquinas on Being: Two or Three Senses of Being?
By Giovanni Ventimiglia (University of Lucerne)
 
Since the pioneering work by Peter Geach, Form and Existence (1955) it has become customary among some interpreters of Aquinas's writings (e.g. Anthony Kenny) or philosophers who refer to Aquinas in their own theories of existence (e.g. Barry Miller) to distinguish between two senses of being or existence: the "there is" sense and the "present actuality" sense. The first sense occurs in sentences such as "Elephants exist, but mermaids do not", where "exist" is a second order predicate. The second sense occurs in sentences such as "Elephants exist, but dinosaurs do not", where "exist" is interpreted as a first order predicate, which is a predicate of individuals.

Medieval Philosophy Network, 15th Meeting
24 March 2017
The Warburg Institute | University of London | School of Advanced Study | Woburn Square | London WC1H 0AB

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4:00-15:00 John Marenbon (University of Cambridge): ‘Abelard, dicta and suigenerism’

15:00-16:00 Laurent Cesalli (University of Geneva): ‘Nec res, nec complexum: 14th century 'suigenerist' propositional semantics’

16:00-16:30 Coffee break

16:30-17:30 Daniel Maslov (Moscow State University): ‘Hoc significat hoc, ergo hoc est hoc in the English Question-Commentaries on Aristotle's Metaphysics, ca. 1283 – ca. 1300

17:30 Conference ends

* * *

Astracts:

John Marenbon, "Abelard, dicta, and suigenerism"
My paper is the prequel to Laurent Cesalli’s. Both are drafts for a chapter we are writing together for a volume on states of affairs in a series on medieval metaphysics. The volume is arranged according to types of theories, as classified by Laurent Cesalli. Suigenerists are those who say that states of affairs are sui generis entities. My attention is therefore on Abelard’s view of the ontological status of dicta, i.e. what propositions say. Unfortunately, what this status is remains far from clear (and, despite the placing of Abelard in this chapter, it should not be assumed that he considers dicta to be sui generis entities). In my paper I shall set out the problems, and I look to my listeners to help find a solution.
Laurent Cesalli, "Nec res, nec complexum: 14th century 'suigenerist' propositional semantics"
In the 14th century, the issue of the significant of the proposition (significatum propositionis) gives rise to a lively debate. A propositio is a declarative sentence, a linguistic truth bearer. Do propositions have proper significant, or do they signify just what their constituents--subject and predicate--signify? Among the logicians who claim that propositions do have special significant, some insist that this significant is sui generis, i.e.: they are neither things (or complexes of things), nor concepts (or complexes of concepts), but... something else. But what exactly? In my talk, I shall compare three "suigenerist" theories--the complexe significabile (Adam Wodeham, Gregory of Rimini), the ens tertium adiacens (Giraldus Odonis) and the modus rei (possibly Richard Billingham)--with respect to their ontological import.
Daniel Maslov, "Hoc significant hoc, ergo hoc est hoc in the English Question--Commentaries on Aristotle's Metaphysics, ca. 1283-ca. 1300"
In his Quaestiones in primum librum Perihermeneias Duns Scotus, when he reasons in oppositum against the statement that Caesar is not a man and an animal if Caesar does not exist, refers to Aristotle's authority: according to Scotus, “Aristotle says in Metaphysics IV: “This is that, because this signifies that” (“hoc est hoc, quia hoc significat hoc”). Remarkably, Aristotle never said anything of the kind, so should we regard “hoc est hoc, quia hoc significat hoc” as a "misquotation"? The authors of Duns Scotus critical edition link this somewhat puzzling statement to Aristotle's words in Metaph.  4, 1006a 33–34 in the anonymous translation: “Dico autem et unum significare hoc; si hoc est, si quidem homo, hoc erit homini esse”. If we look at the passage 1006a 29 – 34 in the medieval translations of Aristotle's Metaphysics, we can see that none of them encourages the kind of reading we find in Scotus. The source of “this is that, because this signifies that” in Aristotle becomes clear if we consider four question–commentaries on Aristotle's Metaphysics - those by John of Dinsdale (circa 1283; Ms Durham, Cathedral Library C.IV.20, fols 1rA - 196vA), William of Bonkes (circa 1292; Ms Cambridge, Gonville and Caius College 344(540), fols 28rA - 91vB), and by two English anonymous authors of the 1290s (Ms Oxford, Oriel College 33, fols 199rA - 261rA; Ms Cambridge, Peterhouse 192, fols 189rA - 240vB). These English masters devote a separate quaestio to the puzzling consequentia “this signifies that, therefore, this is that”. The starting point, however, was the quaestio by Siger of Brabant, against whom John of Dinsdale argued in his Quaestiones in Metaphysicam, where he rejected the truth of the consequentia, while William of Bonkes, Anonymus Orielensis, and Anonymus Domus Petri accepted the truth of the implication. All these masters quote Metaph. Γ 4, 1006b 28-30 as the auctoritas. It looks probable that the setting of the debate was geographically limited to Oxford, and that William of Bonkes, Anonymus Orielensis, and Anonymus Domus Petri all belonged to the same “conversational community”, to use the expression applied by H.G. Gelber to the 14th century Oxford Dominicans. And it is within this intellectual milieu that Scotus's “Aristoteles dicit: hoc est hoc, quia hoc significat hoc” could be read as a recongizable and commonly accepted interpretation of Aristotle. The discussion of the consequentia was focused on several notions and "argumentative common places", including esse secundum significationem or esse significabile vs esse simpliciter. The difference of opinion on the truth of the consequentia between John of Dinsdale and William of Bonkes does not reflect any fundamental disagreement on the nature of the signification of names, and yet certain difference in emphasis may be traced in their treatment of the issues related to the consequentia.

Medieval Philosophy Network,
14th meeting
28 October 2016

The Warburg Institute | University of London | School of Advanced Study | Woburn Square | London WC1H 0AB

Schedule

12:00-13:00
Christopher J. Martin (Auckland University)
'But only God can make a tree': Abaelard on Increase on Growth.

13:00-14:15 Lunch break

14:15-15:15
Cyrlle Michon (l’Université de Nantes)
Aquinas’s account of self- defence and the doctrine of double effect

15:15-16:15
Ben Page (University of Oxford)
Per Se Causal Chains?–A possible revival in contemporary metaphysics?

16:15-16:45 Coffee break

16:45-17:45
John Marenbon (University of Cambridge)
Non-Accidental Relations in earlier Medieval Latin Philosophy

17.45 Conference ends* * *

Abstracts
Christopher Martin, "“But only God can make a tree”: Abaelard on Increase on Growth."

Abstract:  In this paper I return to a topic which I first discussed in my paper ‘The Logic of Growth”* on the claim that nothing grows, one the theses which defined the mid-twelfth century school of followers of Peter Abaelard known as the Nominales.  Since I wrote on the subject Andy Arlig has explored Abaelard’s mereology further, arguing that it grounds a theory of objects, both natural and artificial quite at odds with our folk intuitions about them, and that Abaelard thus regards such quotidian beliefs as false and only to be retained as useful fictions.  I take rather the opposite view and hold that while Abaelard does indeed present an account of wholes and parts which supports the thesis that nothing is increased, or grows, this is a philosophical truth which he seeks to reconcile with our ordinary intuitions about living creatures. In this paper I will attempt to defend my reading of Abaelard and introduce some further evidence for his position from the work of the followers of perhaps his greatest opponent, Alberic of Paris.* ‘The logic of growth: twelfth-century Nominalists and the development of theories of the Incarnation’, Medieval Philosophy and Theology 7, 1998, 1-15. 


Ben Page, "Per Se Causal Chains? - A possible revival in contemporary metaphysics?"

Abstract:  Per Se causal chains, for the Medievals, are everywhere. Yet look as you might in a contemporary introduction to causation, you are unlikely to find any discussion or explication of them. In fact what's more likely is that you find comments to the effect that causes which possess elements of the per se type are atypical and as such they warrant no further discussion. For the Medievalist this is frustrating since these causal chains are often thought of as primary and some interesting arguments, such as arguments for God’s existence, rely upon them and as such they seem worthy of contemporary discussion.The aim of my talk is to lay the groundwork for allowing Medieval discussions relating to per se causal chains to once again become relevant for the contemporary debate. I will do this by suggesting that contemporary metaphysics has smuggled in many aspects of per se causation under a new guise - grounding. I will discuss the similarities and differences between the two notions, and also show how contemporary worries over infinite grounding chains mirror Aquinas’s worries over infinite per se causal chains. If I am correct in thinking that grounding and per se causes are very similar, then it seems to me the time is right for a revival of per se causality within contemporary metaphysics, where debates and uses of these chains in Medieval philosophy will once again become of much broader interest. Medievalists should therefore be ready to lend there expertise to those metaphysicians rediscovering this previously explored notion, that is … assuming I’m correct regarding this similarity! I will leave that for you, the experts, to judge.



Cyrille Michon, "Aquinas’s account of self-defense and the doctrine of double effect"

Abstract:  Aquinas’s brief treatment of self-defense (Summa Theologiae II-II.64.7) is rightly held for the source of both the notion and the theory of ‘double effect’. But whether Aquinas in this text, or elsewhere, defends what is nowadays called thus is controversial. I propose an interpretation.

John Marenbon, "Non-Accidental Relations in earlier Medieval Latin Philosophy"

Abstract:  Historians of philosophy have long recognised that medieval conceptions of relations are radically different from contemporary ones. Contemporary logic represents relations as functions with more than one place, so that, for example, the function ‘— is father of — ’ describes the relationship between John (whose name fills the first gap) and Maximus (whose name fills the second).  Similarly, the relations themselves described by such functions are conceived, not as belonging to only one of the things related, but as somehow being common to them. By contrast, throughout the Medieval Latin tradition, relation was considered, following Aristotle’s Categories, as one of the nine types of accident. But a given particular accident, according to Aristotle and the medieval tradition, can belong to only one substance. For medieval philosophers, therefore, my being father of Maximus is an accident that belongs to me, in much the way that the accident of being grey-haired does. For his part, Maximus has a different accident, of being the son of John. Yet, from Augustine onwards, Latin thinkers recognized a non-accidental type of relation. The persons of the Trinity are related: God the Father is the father of God the Son, and the Son the son of the Father, and the Holy Spirit is related to Father and Son as their spiration. These relations are not accidental, because God has no accidental properties. Moreover, although the relation of being-the-son-of is different from that of being-the-father-of, they do not, in the case of the Father and the Son (as they would do in that of John and Maximus) belong to two different substances.
My paper will explore the extent to which thinking about the Trinity allowed philosophers in the period up to 1200 to forge a way of considering relations distinct from Aristotle’s, although the Categories remains its point of departure.

Medieval Philosophy Network,
12th Meeting
1 April 2016

The Warburg Institute | University of London | School of Advanced Study | Woburn Square | London WC1H 0AB

Schedule

[12.30 Meet outside the Warburg for those who would like to attend lunch.]
 
13.45-14.05                       
Dragos Calma (University of Cambridge)
An anniversary today: the object of philosophy
 
14.05-15.05                       
Ian Logan (Blackfriars, Oxford)                       
Per rationalem mentem: Anselm’s ‘turn to the subject’
 
15.05-16.05           
Anna-Katharina Strohschneider
(Würzburg University/Warburg Institute)
Agostino Nifo on Averroes and the Relationship between Physics and Metaphysics
 
16.05-16.35                                    
Coffee Break
 
16.35-17.45                       
Wilfrid Hodges (Queen Mary College, London)
Buridan and the Avicenna-Johnston semantics (with response by Spencer Johnston (University of York)
 
17.45                                   
End of Meeting
 
Abstracts

'Per rationalem mentem: Anselm’s ‘turn to the subject'
Ian Logan - Blackfriars Hall, Oxford

In the Monologion and Proslogion, Anselm addresses the existence and nature of God and how it is that rational investigation of the ineffable is possible. Prima facie the treatment of these questions appears very different in the two works. However, there is commonality in their use of the imagery of sight and light. By investigating this common imagery and the epistemological function of the imago dei in Anselm’s anthropology, I uncover an important aspect of the methodological relationship between the Monologion and Proslogion: the logical dependence of the argument of the earlier work (Monologion) on the later (Proslogion). I contend that the argument of the Proslogion represents the application of, and provides or is intended to provide the justification for, the philosophical ‘turn to the subject’, which Anselm articulates in Monologion 66 - that it is through reflecting on itself that the rational mind comes to knowledge of the supreme being. Though articulated there this approach is not systematically employed nor grounded in the Monologion. I suggest that it is the argument of the Proslogion that grounds the epistemological role that Anselm gives to the imago dei in the Monologion. Anselm does not need to rehearse the trinitarian argument of the Monologion in the Proslogion, precisely because, having established God’s existence and attributes by his unum argumentum, which constitutes the reflection on the thinking self that he had proposed in the Monologion, he has provided the foundation for the trinitarian argument based on the notion of the imago dei that is articulated in the Monologion.


'Agostino Nifo on Averroes and the Relationship between Physics and Metaphysics'
Anna-Katharina Strohschneider, Universität Würzburg

The Renaissance Averroist Agostino Nifo was not only interested in Averroes' theory of the intellect, but also in his metaphysics – so much, in fact, that he wrote a super commentary on the twelfth book of Averroes' Long Commentary on the Metaphysics. In his work Averroes writes at length about the relationship between physics and metaphysics, defending his own theory against both Alexander of Aphrodisias and Avicenna. That means that Nifo, too, must take a stand on the division of labour between the two sciences. I argue that Nifo actually introduces a slightly different take on the respective responsibilities of physics and metaphysics by paraphrasing and explaining Averroes' theory. Nifo puts more emphasis than Averroes himself on the type of demonstration the two sciences employ, while the latter is more concerned with the things that each science studies.


'Buridan and the Avicenna-Johnston Semantics'
Wilfrid Hodges (Queen Mary College, London)

In his recent PhD thesis (St Andrews 2015) Spencer Johnston gave a Kripke semantics for Buridan's divided modal logic and showed that it upholds all Buridan's claims of validity and invalidity in this logic.  It turns out that Johnston's semantics is formally equivalent to (i.e. a notational variant of) a translation of Buridan's modal logic into the dtz fragment of Avicenna's two-dimensional logic.  Since the relationship between Avicenna's alethic modal logic and his 2D logic is one of the major questions about his logic, one naturally asks whether his 2D logic does the same for his modal logic as Johnston's semantics does for Buridan's logic.  I think this is dead right. It explains many things, for example why Avicenna keeps emphasising that his 2D logic doesn't involve possible entities.  But some puzzles remain.

The next meeting will take place on 3rd November 2015 at The Warburg Institute, Woburn Square, London, WC1H 0AB.

11:00-12:00: Marcio Augusto Damin Custodio (State University of Campinas)
Aquinas Reconstruction of Aristotle's Identity Thesis of Metaphysics VII, 6
 
12:00-13:00: Can Laurens Loewe (KU Leuven)
The Blessed Virgin and the Two Time-Series: The Limit Decision Problem in Hervaeus Natalis and Durandus of St. Pourçain
 
13:00-15:15: Lunch break      
 
15:15-16:15: Joseph Sternberg (University of Colorado)                         
Aquinas on the Relationship between the Vision and Delight in Perfect Happiness
 
16:15-16:45: Coffee break                      
 
16:45-17:45: Luigi Campi (Università degli Studi di Torino)
‘God is the rewarder not of nouns but adverbs’: Hunting Abelardian Ghosts


Abstracts

‘God is the rewarder not of nouns but adverbs’: Hunting Abelardian Ghosts
Luigi Campi (Università degli Studi di Torino)

My paper presents the first results of an on-going research I am undertaking on the phrase “God is Rewarder not of Nouns but of Adverbs”. Although it had a widespread circulation in the late Middle Ages and Early Modern period, it has been mostly overlooked by intellectual historians. As far as I can tell, its earlier appearance is found in Bernard of Parme’s Ordinary Gloss to the Gregorian Decretals (c. 1241). Intriguingly enough, Bernard ascribed such a phrase to “Io. quidam sapiens phantasma” (“Io., a certain wise ghost”). After surveying some stages of this phrase’s diffusion, the paper faces the question of its attribution. Both the hypotheses proposed, however, have not provided any positive textual evidence so far. Eventually, the paper takes into closer consideration Bernard’s excerpt and its textual components, and raises some questions concerning their connection with Abelard’s controversial ethical teaching.

Aquinas Reconstruction of Aristotle's Identity Thesis of Metaphysics VII, 6
Márcio A. Damin Custódio (State University of Campinas)

I intend to present my reconstruction of Aquinas lesson on Aristotle's Metaphysics, VII, 6 1031a15-1032a11, on the question whether the thing is identical to its essence. I hold that Aquinas provides a consistent interpretation of the identity theses, despite been guided by his understand that sensible substances must be considered as primary entities. I will argue that Aquinas holds the priority of sensible substances, and try to make it compatible with the treatment given to essence in Metaphysics Z, 6. I will consider especially those passages where it looks like Aristotle says that the priority must be given to the essence, identified with form, one of the hylomorfic components of sensible substances. In doing so, I also intend to show how Aquinas makes Metaphysics Z, 6 compatible with compromises assumed by him in Being and Essence, with Aristotle's Categories.

The Blessed Virgin and the Two Time-Series: The Limit Decision Problem in Hervaeus Natalis and Durandus of St. Pourçain
Can Laurens Loewe (KU Leuven)

In Physics VIII, 8, Aristotle discusses a problem that arises for the temporal characterization of changes between contradictory conditions, such as the change of a body from not-white to white. The problem has come to be known as the “limit decision problem”, and can be formulated as follows: when does a body that changes from, say, not white to white cease to be not white, and begin to be white? Intuitively, it seems very easy to assign the temporal
limits: the body has a last instant of being not white, and a first instant of being white. However, Aristotle finds this solution unacceptable because, on his theory of the continuum, no two instants can be immediate successors. As an alternative, Aristotle proposes that there is, in reality, only one temporal limit, and that this limit belongs to the posterior condition. On his view, there is, in a change from not white to white, a first instant of being white, but no last instant of being not white.
Since the pioneering work of Norman Kretzmann and Simo Knuuttila in the 1970s, many aspects of the scholastic discussion of Aristotle’s limit decision problem have been studied; and it is generally known that new non-Aristotelian solutions to this problem emerged (e.g., with Giles of Rome, Henry of Ghent, or Landulf Caraccioli). The goal of my paper is to examine two non-Aristotelian solutions that have not received any scholarly attention so far: the solutions provided by Hervaeus Natalis and Durandus of St. Pourçain. In their respective discussions of the sanctification of the Holy Virgin in their Sentences Commentaries, they both argue that a satisfactory answer to the limit decision problem has to take into account not only Aristotelian continuous time but also (non-Aristotelian) discrete time.
I will first consider why Hervaeus and Durandus think that discrete time needs to be considered. I will argue that they think this because they take discrete time to be the proper measure of corruptible substantial forms and static accidental forms (i.e., accidents that do not have temporal parts), and these forms are precisely the ones concerned by changes between contradictory conditions. Secondly, I will show that, for Hervaeus and Durandus, discrete time has some properties that continuous time does not have, one such property being that one instant immediately succeeds another. Accordingly, for them, the possibility emerges of defending the non-Aristotelian solution that there is a last instant of the prior condition as well as a first instant of the posterior condition, and they defend precisely this solution, as I will argue. Thirdly, I will show that despite their common approach, Hervaeus and Durandus differ greatly in their assessment of Aristotle’s solution to the limit decision problem. While Hervaeus argues that the Aristotelian solution can coexist with a solution in terms of discrete time because continuous and discrete time are two non-intersecting time- series, Durandus argues that the Aristotelian solution breaks down.

Aquinas on the Relationship between the Vision and Delight in Perfect Happiness
Joseph Sternberg (University of Colorado)

One vexed philosophical question that once enjoyed great esteem is this: in the Beatific Vision that the saints enjoy in heaven, does happiness (beatitudo) consist in the vision of God, in delight in God, or in a combination of the vision and the delight? The answer that one gives to this question apparently commits one to a view about what happiness is ultimately about. It has long been thought that Aquinas holds that happiness consists in the vision of God alone. In this essay, I argue that, on this important issue, Aquinas actually holds that happiness consists both in the vision of God and delight in God, but that – unlike some of his contemporaries – Aquinas unequivocally affirms that the vision is more important in happiness than the delight. After arguing for this interpretation, I consider the quite compelling account of perfect and imperfect happiness that follows from it.

The next meeting will take place on Friday 19 June 2015 at The Warburg Institute, London. 

11:00-12:00
John Marenbon (Cambridge University) 
Why the Long Middle Ages are important for a Real History of Philosophy

12:00-13:00
George Corbett (Cambridge University) 
Peraldus, Aquinas and the Tradition of the Seven Capital Vices

13:00-14:00
Lunch break 


14:00-15:00
Irena Cronin (University of California, Los Angeles)
Concerning Infinitizing Negation and Existence: A Solution to a Vague Case

15:00-16:00
Caterina Tarlazzi (Cambridge University) 
Is Socrates a Universal? Audacious Views in Early Twelfth-Century Realism

16:00-16:30
Coffee break 


16:30-17:30
Luca Gili (University of Leuven)
Aristotelian Plenitude: Aristotle and Thomas Aquinas on the Principle of Plenitude

The next Medieval Philosophy Network Meeting will take place at The Warburg Institute in London on Friday 13 March 2015. 


12:15-1:15pm                1st talk
Chris Martin (University of Auckland)
From Paris to Oxford and Back: Two Traditions in the Treatment of Propositionality, Negation and the Conditional in the Theory of Syncategoremata    

1:15pm-2:15pm             Lunch break

2.15pm-3:15pm            2nd talk
Marco Nievergelt (University of Lausanne)
Allegory and Epistemology: Roger Bacon and Jean de Meun's Roman de la Rose

3.15pm-4:15pm            3rd talk
John Heil (Washington University in St Louis)
Accidents Unmoored

4.15pm-4:45pm            Coffee break

4:45pm-5:45pm            4th talk
Thomas Pink (King’s College London)
Suarez on canon law

 
Abstracts: 

From Paris to Oxford and Back: Two Traditions in the Treatment of Propositionality, Negation and the Conditional in the Theory of Syncategoremata

Chris Martin (Auckland University)

The first half of the twelfth century is one of the greatest periods in the history of logic and the centre of the logical world was Paris. Some years ago it was suggested that the ideas developed in Paris were transmitted by the beginning of the thirteenth century to Oxford where they were preserved while Parisian logicians developed the radical new theories of modism and speculative grammar. This thesis, dubbed by Sten Ebbesen OXYNAT, holds that the English tradition in the form developed by William of Ockham was eventually exported back to Paris and flowered there in the terminism of John Buridan. In this paper I will examine the treatment of propositionality, negation and the conditional in the treatises on syncategoremata written by William of Sherwood and Peter of Spain and show that we can indeed distinguish two distinct ways of treating these questions and that the ‘continental’ treatment found in Peter of Spain retains something of the highly sophisticated philosophical semantics of Peter Abaelard which is absent in the ‘English’ treatment of William of Sherwood.

Allegory and Epistemology: Roger Bacon and Jean de Meun's Roman de la Rose

Marco Nievergelt (University of Lausanne)

Since the appearance of Gérard Paré’s studies in the 1940s, Jean de Meun’s familiarity with scholastic materials is widely accepted. The precise nature and deeper significance of Jean’s use of scholastic materials, however, remain to be understood. I propose a reading of the Roman de la Rose that highlights the importance of broadly epistemological concerns in the poem, arguing that such developments grow out of Jean’s engagement with a number of contemporary problems debated at the University of Paris and beyond. In particular I identify two broad areas of epistemological exploration: theories of cognition and sense perception, specifically the role of the sensible and intellectual species and the rise of perspectivist optics; and theories of signification, particularly concerning the status of metaphor and figurative speech. In both cases Roger Bacon’s often innovative and controversial theories appear to have served as major touchstones for Jean. But rather than seeing Bacon merely as one of the many ‘sources’ for the Roman de la Rose, I suggests that Jean’s allegorical poetics as a whole ultimately grow out of this deep, sustained engagement with Bacon. This has major implications for our understanding of the development of allegorical poetry and in the period 1270–1400, but also invites us to reconsider the philosophical texture of such literature, its relation with scholasticism more broadly, and the place of narrative allegory within an enlarged intellectual history of the later Middle Ages.

Accidents Unmoored

John Heil (Washington University in St Louis)

The paper begins with an avowal of the importance of the history of philosophy for philosophy. Attention then shifts to an interesting account of Abelard's conception of accidents advanced by Christopher Martin and John Marenbon, focusing on their comparison of Abelard's accidents with D. C. Williams's tropes. Reasons are given for thinking that the comparison is inapposite. The paper concludes with a plea for help on behalf of contemporary philosophers working in metaphysics.

Suarez on Canon Law

Thomas Pink (King’s College London)

Canon law is the humanly legislated positive law of the Church and, it seems, a parallel of civil law, the humanly legislated positive law of the State. How do the natures of Church and State involve similarities and differences between these two forms of human positive law? Canon law raised important questions about the relations between Church and State, and about the scope and function of positive law, both generally and for the special case of the Church. Suarez addressed these questions within the framework of a conception of positive law, both civil and canonical, as providing a mode of coercive instruction, and of the good of a community that positive law served as importantly determined by the beliefs of its members.