13th/14th Century Philosophy

This chapter shows that Augustine’s “divine illumination theory of knowledge” is merely his belief that the human mind is capable of intellectual cognition because it naturally “participates” in the Divine Mind, as its image. Consequently, Bonaventure's and Gilson's claim that Augustine thought the human mind must be enlightened by special divine assistance in ordinary (non-mystical) intellectual cognition is erroneous. That is true of the whole of Augustine's writing career: earlier works such as On the Teacher and the Confessions agree with (...) his presentation in On the Trinity 12. This resolution of a long-standing debate about how to interpret Augustine becomes possible when we pay careful attention to the ancient philosophical problems “illumination” is meant to resolve, and when we use Plotinus and the early Christian Neoplatonist Marius Victorinus to interpret his vocabulary and claims. The recovery of this late antique context greatly clarifies Augustine’s epistemological theory and reveals its explanatory power. For the Plotinian basis of the account is a synthesis of Aristotelian and Platonic elements that can explain why our minds are uniquely suited to abstracting intelligibility from sensory data, and how they do so. (shrink)

In this paper, I explore the connection between Olivi’s views about the nature of conscious experience, on the one hand, and his views about the nature of the soul on the other. In particular, I argue that Olivi’s account of the soul as essentially active and essentially reflexive entails a commitment on his part to a kind of innate self-knowing. I further show that, for Olivi, this primal psychological self-reflexivity plays an important role in explaining the subjective character of conscious (...) states. (shrink)

Henry of Herford frequently addresses medical topics throughout his encyclopedia, the Catena aurea entium. The paper offers an overview of the sections that deal with health, sickness, and diseases. While including key texts of medieval medical literature, Henry’s ‘medical library’ has a specific focus on practical medicine, pharmacology, and the regimen. The paper also includes editions of some questions dedicated to specific diseases.

This article examines the late-medieval plague tractate by Augustine of Trento, an Augustinian friar who addressed the matter of plague before the Black Death of 1347/1348. I will investigate Augustine’s astrological approach to the prognostication, prevention, and cure of the plague epidemic. Further, I will compare his work to the Compendium medicinalis astrologiae, composed by the Dominican Niccolò de Paganica in 1330, and to the consilia produced by the master of medicine Gentile da Foligno in 1348. This double comparison will (...) help to better understand the shared intellectual milieu and the different approaches of these three authors. (shrink)

Due to his first-hand experience with the Black Death, the Italian physician Gentile da Foligno (d. 1348) became a famous authority in this field. He devoted various writings to the pestilence; one of them was a Consilium addressed to the city of Pisa. This same Advice on the Plague was then rendered into Hebrew by an anonymous translator. The practical character of the Consilium, which contains numerous instructions and recipes to prevent contagion and treat the disease, might have aroused the (...) interest of Jewish physicians who, excluded from academic education, were looking for useful treatments. In this paper, the Latin text and its Hebrew translation are analyzed, and in the appendix the edition of both versions is provided. (shrink)

The aim of this dissertation is to draw an outline of John Buridan’s views about the intellectual virtues and to foster debate on Buridan’s commentary on the _Nicomachean Ethics_ (QNE). In order to do that, my first goal was to make some parts of Buridan’s _Ethics_ commentary more accessible to readers by providing a working edition of the Latin text accompanied by its English translation. Each quæstio is followed by a brief exegetical examination which clarifies Buridan’s reasoning and arguments. The (...) second part of this work, being of a synthetical nature, provides a more systematic account of each of the five intellectual virtues Buridan discusses, namely craft, understanding, knowledge, prudence and wisdom. The analyses provided rely on the QNE and other works of the Buridanian corpus, which are then compared and contrasted with views held by some of his forerunners, contemporaries, and successors. (shrink)

Walter Burley’s Commentary to the Nicomachean Ethics is commonly considered little more than an expositio littere. Nevertheless, in some notanda he raises open questions about the crucial gap between the conclusion of the practical syllogism and action. Within the interpretative framework of Saarinen’s and Wood’s works, I will focus on Burley’s analysis of akrasia in book VII. The first point will be some questions related to a notandum, concerning the gap between intellect and will as typical of akrasia. Secondly, I (...) will analyze it in the light of Burley’s semantics, where conceptual tools developed in one science prove useful in solving problems of another discipline, in this case ethics. Finally, I’ll address the Commentary’s brief gloss about heroic virtue, as example of Burley’s first steps in the use of measure languages in ethics, by analogy with the Oxford Calculators’ techniques. (shrink)

All adherents of hard determinism face a number of steep challenges; those with traditional religious commitments face still further challenges. In this paper I treat one such further challenge. The challenge, in brief, is that given hard determinism, it’s very difficult to say why God couldn’t, and why God wouldn’t, just immediately and directly realize the final end of creation. I develop the challenge, and a number of solutions, through the work of the medieval Jewish philosopher, Hasdai Crescas. After arguing (...) that Crescas is indeed a hard determinist, and showing that he forecloses all the easy solutions to our challenge, I piece together from his work two solutions. They both start from the assumption that the purpose of creation is creaturely love of God. Each then lays down a constraint on proper love of God, which can be satisfied only if God demands of us to realize some state of affairs other than loving Him. (shrink)

The Dominican theologian Durand of Saint-Pourçain (ca. 1275–1334), breaking from the wide consensus, made a two-pronged attack on concurrentism (i.e., the theory according to which God does more than conserving creatures in existence and co-causes all their actions). On the one hand, he shows that the concurrentist position leads to the unacceptable consequence that God is the direct cause of man’s evil actions. On the other hand, he attacks the metaphysical foundations of concurrentism, first in the version offered by Thomas (...) Aquinas and Giles of Rome, and then in a more general way. Against Thomas and Giles, he challenges Neoplatonic assumptions about causality and being. More generally, he establishes that God’s action and a creature’s action can be neither identical nor different, and thus cannot both be direct causes of the same effect. Without claiming that Durand’s series of objections are definitely unanswerable, we may at least observe that they have generally been underestimated (which earned him the lowly role of the mere foil of the concurrentist view in the history of philosophy) and are able to do considerable damage to concurrentism. (shrink)

Hacemos una lectura del “Tratado sobre los principios de la teología” de Guillermo de Occam, y echamos un vistazo a la Escolástica tardía que esta obra representa tan bien, revisando diferentes referencias bibliográficas, que me han permitido conocer y analizar diferentes conceptos y enfoques acerca de este singular tema. De hecho, se trata de una obra mayor, de gran calibre, pero de autor incierto, generalmente atribuida a Occam, aunque la autoría real está en disputa. Lo cierto es que se trata (...) de un momento culminante de una época de la historia del pensamiento occidental; una en la que su autor, con briosa arquitectura, levanta un edificio que perenniza el pensar occamista, comentándolo, glosándolo y dándole forma enciclopédica, minuciosa, como la que uno esperaría encontrar en un diccionario o un manual del Nominalismo naciente. (shrink)

Post-classical period witnessed intense debates on aspects of the Avicennan theory of science. Among them one set of discussions concerned the issue of subject matter (mabāhith al-mawdūʿ) in a science. They were raised by Ṣadr al-Sharīʿa (d. 747/1346) in the introduction of his al-Tawḍīh, a commentary on his legal theory text al-Tanqīḥ. Therein, he raised three questions: (1) whether the subject matter of a science can be multiple, (2) what restricting subject matter of a science means, and (3) whether one (...) thing can be the subject matter of multiple sciences. Taftāzānī (d. 792/1390), a proponent of the Avicennan theory, objected to Ṣadr al-Sharīʿa’s positions in his al-Talwīḥ, the most well-known supercommentary on al-Tawḍīh. The paper analyzes this debate on the issue of subject matter in sciences, and thus sheds light on the reception of an important aspect of the Avicennan theory of science in the postclassical period. (shrink)

Le présent article entend aborder la critique de l’intellect agent de Durand de Saint-Pourçain (v.1275-1334) et l’une des réactions immédiates suscitées par celle-ci, que l’on trouve dans les Evidentiae contra Durandum de Durandellus. Après une brève présentation de ce texte et de certains enjeux philologiques reliés à l’étude de la noétique de Durand et de ses adversaires, nous proposons une analyse de certains arguments centraux de Durand contre l’intellect agent et de ceux que leur oppose Durandellus. Ce faisant, nous entrons (...) en dialogue avec Serge-Thomas Bonino, seul commentateur à s’être jusqu’ici intéressé au débat entre Durandellus et Durand au sujet de l’intellect agent, et contestons certaines de ses analyses et conclusions. (shrink)

This paper inquires into how the new techniques of 14th-century physics, especially the doctrines of the maxima and minima of powers and the latitudes of forms, were applied to the issue of propagation of light. The focus is on several Prague disputed questions, originating between 1377 and 1409, dealing with whether illumination has infinite or finite reach and whether illumination’s intensity remains constant (uniformis) or is rather uniformly decreasing (uniformiter difformis). These questions are contextualised through examination of Oxford, Paris, and (...) Prague sources of the era (John Dumbleton, John Buridan, Nicole Oresme, Albert of Saxony, Henry of Langenstein, John of Holland) to construct a fresh survey of late medieval theories of light. Along the way, the discovery of a hitherto unknown Prague disputation from the 1370s is announced, and new evidence for the dating and Central European dissemination of Jacobus de Sancto Martino’s De latitudinibus formarum and Nicole Oresme’s Questiones super Geometriam is uncovered. (shrink)

Medieval Integration Challenge for Intellection (MICI) in Albert the Great, Siger of Brabant, and Radulphus Brito.

This paper examines the attribution to Eckhart of the unpublished collationes contained in the MS Bernkastel-Kues, Bibliothek des St. Nikolaus-Hospitals 21. Eckhart’s authorship was excluded by Koch, but is plausible from the point of view of the history of the manuscript tradition. The paper announces the discovery of a series of similar collationes in a Lüneburg manuscript of Franciscan origin and highlights, through the edition of the texts relating to Advent, some parallels between both works, probably depending on the use (...) of a common source. (shrink)

The 14 essays collected in this volume explore the various aspects of Augustine’s philosophy and its medieval reception: by considering his education and the development of his thought as conveyed by a series of philosophical images and styles, the volume reconstructs the recurring motifs of his intellectual journey (the anti-Manichean polemic, his political vision, the role of reason, and the theory of war) and their fortune in authors such as Thomas Aquinas, Nicole Oresme, Gregory of Rimini, and Robert Grosseteste.

This volume offers a new edition of the original text and an Italian translation of Dante Alighieri’s Questio de aqua et terra, discussed in Verona in 1320. The introductory apparatus and the textual commentary reconstruct the historical context of the quaestio (in the light of the debates on the nature of the elements and Aristotelian cosmology), its discussions in the historiography of science and philosophy, and the fortune of the text in its editions from the sixteenth century onwards.

According to standard late medieval Christian thought, humans in heaven are unable to sin, having been “confirmed” in their goodness; and, nevertheless, are more free than humans are in the present life. The rise of voluntarist conceptions of the will in the late thirteenth century made it increasingly difficult to hold onto both claims. Peter Olivi suggested that the impeccability of the blessed was dependent upon a special activity of God upon their wills and argued that this external constraint upon (...) their wills did not eliminate their freedom. Later voluntarists largely agreed with Olivi in attributing the confirmation of the blessed to be dependent upon God’s activity in some way, but disputed the means by which and the extent to which the wills of those in heaven could be said to retain their freedom. This paper will examine various attempts made to either harmonize these two claims or else to soften the blow of rejecting one of them; among the authors surveyed will be Peter John Olivi, John Duns Scotus, Henry of Harclay, William of Ockham, Walter Chatton, and Margurite Porete. (shrink)

L. Gazziero, « Dante », in M. Lewis and D. Rose (ed.), The Bloomsbury Italian Philosophy Reader, London, Bloomsbury, 2022, p. 29-42: Even if Dante's work involves a fair amount of autobiographical material and occasionally fashions itself as a record of personal experiences, his writings reveal surprisingly few facts about his life. With one exception though, etc.

In hindsight, it is not surprising that the exegesis of Aristotle’s Sophistici elenchi developed into one of the most substantial parts of the Latin commentary tradition. To make a long story short, in its customary capacity as the art of arts and the science of sciences, medieval logic was primarily concerned with discerning the true from the false in arguments as they occur in natural, ordinary speech as opposed to the more formalised parlance later logicians will resort to. It makes (...) perfect sense, then, that medieval logicians paid special attention to everything that threatens sound reasoning and that prevents us from speaking the truth. Indeed, they were second to none and better than most at exposing and elucidating arguments’ flaws and shortcomings. After all, as John Buridan – faithful to a long and illustrious tradition – aptly put it, «rooting out errors» is logic’s first order of business. As early as the 1140s, Aristotle’s Sophistici elenchi provided the most fertile ground for such keen interest in fallacies; which, in turn, explains etc. This much is uncontroversial or, at any rate, can withstand any amount of scrutiny we care to throw at it. Courtesy – first and foremost – of Sten Ebbesen, whose long-standing interest in medieval writings on bad arguments has turned the Byzantine and Latin aftermath of Aristotle’s Sophistici elenchi into well-charted territory, by all standards. The Anonymus Cantabrigiensis has played no small part in shaping this picture. As a matter of fact, time and again over the last forty years or so, quotes and insights from the anonymous work have kept showing up in Ebbesen’s editions and studies: since he first discovered the commentary in the late 1970s and brought it to the general attention, Ebbesen has routinely drawn on the Anonymus as an early witness of the circulation of Aristotelian logical works and related texts, as a convenient illustration of major trends and distinctive features of the Latin literature on fallacies, and as a sensible interpreter in his own right. (shrink)

Multiple generality has long been known to cause confusion. For example, “Everyone has a donkey that is running” has two readings: either (i) there is a donkey, owned by everyone, and it is running; or (ii) everyone owns some donkey or other, and all such donkeys run. Medieval logicians were acutely aware of such ambiguities, and the logical problems they pose, and sought to sort them out. One of the most ambitious undertakings in this regard is a pair of massive (...) diagrams (magnae figurae) which map out the logical interrelations of two sets of doubly-general forms. These appear in a fourteenth-century MS of John Buridan’s Summulae de Propositionibus. In this paper, I present these diagrams, and determine the truth conditions of their different forms. To that end, I have developed a bespoke system of diagrams to display their truth conditions. As we will see, such forms present significant difficulties for an all-encompassing account of the role form plays in logic. Accordingly, they can tell us important things about the role logical form plays in Buridan’s account of logical foundations. (shrink)

This paper analyzes Paul of Venice’s theory of measurement of natural properties and changes. The main sections of the paper correspond to Paul’s analysis of the three types of accidental changes, for which the Augustinian philosopher sought to provide rules of measurement. It appears that Paul achieved an original synthesis borrowing from both Parisian and Oxfordian sources. It is also argued that, on top of this theoretical synthesis, Paul managed to elaborate a quite original theory of intensive properties that marks (...) him out not only from the nominalist framework of his Parisian sources but also from the usual realist treatments of the problem. Finally, it is shown that, to a certain extent, Paul undertook to apply the mathematical and logical tools inherited from the Calculatores tradition to empirical problems of natural philosophy, leading to reevaluate his role in the evolution of scientific thought in early 15th-century Italy. (shrink)

This paper investigates how later medieval intellectuals dealt with perspectiva – the medieval discipline of optics, which had seen considerable popularity in Latin Europe since the 13th century and was epitomized in several “books of knowledge” of differing scopes, levels of difficulty and intended audience. This paper is focused narrowly on one of these intellectuals – Reimbotus de Castro (fl. 1350s–1380s), who was not only personal physician to the Roman Emperor Charles IV but was also a diligent copyist and abbreviator (...) of many quadrivial and medical texts, and the owner of several codices now kept in the Bibliotheca Palatina. One of these codices, Pal. lat. 1380, includes two optical treatises copied by Reimbot himself. A closer reading of these texts, hitherto unnoticed by historians of medieval science, provides fresh insight into the reception of optical knowledge in the intellectual milieu of Paris in the 1360s, when Reimbot resided here. The first text is Reimbot’s reportatio of lectures on the famous optical textbook Perspectiva communis by John Peckham; the second is Reimbot’s redaction of the unknown optical compendium Perspectiva cum sit una. Finally, this paper addresses the issue of why optics was interesting at all for people at the intersection of the scholarly and courtly communities like Reimbot (and late medieval scholars generally). It is suggested that medieval optics, being useful for astronomical observations, could be considered a sort of auxiliary discipline for astrology and astrological medicine. (shrink)

Medieval and early modern devotional works rarely receive serious treatment from philosophers, even those working in the subfields of philosophy of religion or the history of ideas. In this article, I examine one medieval devotional work in particular—the Middle High German image- and verse-program, Christus und die minnende Seele (CMS)—and I argue that it can plausibly be viewed as a form of medieval public philosophy, one that both exhibited and encouraged philosophical innovation. I address a few objections to my proposal—namely, (...) that CMS is neither public enough nor that it counts as proper philosophy—and I attempt to defend CMS’s public philosophical credentials in light of these objections. I conclude with a brief discussion of how devotional texts like CMS can help us do innovative public philosophy today. (shrink)

Beginning in the 1990s, the medieval historiography has devoted increasing attention to the presence of thought experiments in the medieval philosophical sources. Following the line drawn by King, Perler, Grellard and Marenbon studies, this paper aims to use the concept of thought experiment as an historiographical category to explore the issues of Peter Damian’s dilemma, in the chapter I of De divina omnipotentia, about the capacity of the divine power to restore the virginity of a maiden who has lost it. (...) In this perspective, the case of the virgin appears as a counterfactual scenario, that makes us understand how the question is not metaphysical but fundamentally epistemological. Peter Damian is not discussing about possible boundaries of God’s nature: he is rather arguing about the inability of the dialectic arguments to explain the omnipotence, in an attempt to define the cognitive and linguistic modes under which the human intellect could comprehend the virgin’s dilemma. The crucial step is the shift from possibilitas – intended as a statistical approach to the possible as “potential” – to potentia as a metaphysical attribute, regardless of her actualization: in this way, Peter Damian lifts the question up from the level of the human will, which often fails to grasp his objects, to the divine form of the will, which unfailingly achieves his objectives. (shrink)

This essay analyses Peter Damian’s idea of perfection, by taking into account his texts devoted to the eremitic conversatio avellanita: in particular, Epistles 18, 50, and 109. It answers to the following working question: how is it possible to achieve an ‘angelic’ condition? Particular attention is paid to the ideas of time, space and ascesis.

This essay examines the way in which the modal concept of necessity was discussed and analyzed in some eleventh- and early twelfth-century sources, such as Peter Damian’s De divina omnipotentia, Anselm of Canterbury’s Cur deus homo and several anonymous commentaries on Aristotle’s De interpretatione that were presumably composed in the first two decades of the twelfth century by logicians connected to William of Champeaux’s and Peter Abelard’s milieu. My aim is to offer a comparison of these different sources with respect (...) to their use of the Boethian distinction between two types or kinds of necessity, namely, the “absolute” or “simple” necessity that is involved in statements like “God is necessarily immortal” or “it is necessary for humans to be animals”, and the “conditional” or “temporal” necessity that is at stake when we say, for instance, that someone necessarily walks when he is walking. (shrink)

The presence of quotations from the Laus heremiticae vitae contained in Peter Damian’s letter 28 in Paradiso XXI has led scholars to claim that Dante was familiar with the writings of the hermit and cardinal who lived in the 11th century. Instead, the author believes that Dante had only read the Laus heremiticae vitae, which circulated independently of the other works of Peter Damian, whose writings were otherwise unknown to Alighieri. This conclusion is reached on the basis of the poor (...) quality of the information Dante offers on Peter Damian’s biography, which derives from the traditions of Ravenna and not from Fonte Avellana, where he could have found the manuscripts of the hermit and cardinal’s works. (shrink)

The epistle 49 by Peter Damian contains an original allegorical interpretation of the Jewish Sabbath as a day of rest, enriched by a mystical exegesis of the biblical Hexameron, in which the six days of creation correspond to the inner journey of man called to intimately unite with God. Peter Damian expresses this process of deification through the two images of man as microcosm and sovereign of creation and man as temple of God. The main source of Damian’s text seems (...) to be the De natura hominis by Nemesius of Emesa, which he knows thanks to the translation of Alfanus I of Salerno, one of the recipients of the epistle: this is confirmed by textual evidences, but also by a preliminary historical and historiographic reconstruction of the clue of friendship that binds Peter Damian to the archbishop of Salerno. (shrink)

This article proposes an analysis of the use and value of the terms ‘philosophia’ and ‘philosophus’ in Peter Damian’s works. Despite a remarkable number of ‘negative’ occurrences, the two words are also used in a ‘positive’ sense, especially in the sermo VI, devoted to the figure of Saint Eleuchadius, a pagan philosopher who converted himself to the Christian truth and put his intellectual competencies at the service of the Church. Contradicting the standard image of Peter Damian as ‘anti-dialectician’, Eleuchadius’ case (...) shows how the cardinal-bishop of Ostia could accept the idea of a Christian philosopher, following the Augustinian interpretation of the biblical “Gold of the Egyptians”. (shrink)

The spread of the reform found one of its protagonists in the hermit and Cardinal Bishop of Ostia, Peter Damian. An example worthy of case-study is the Gallic mission as apostolic legate in 1063. The most complete report of this journey was written by an anonymous disciple. This perspective allows to observe Damian’s communication strategies and the different methods used referring to the various interlocutors. The cause of the apostolic legation was the help request from Hugh, abbot of Cluny, for (...) the pressures suffered by the Bishop of Macon. The occasion was propitious from the point of view of the cardinal bishop to expand his network of personal and institutional relationships and to legitimize the papal supremacy. He proceeded to France, summoned a council at Chalon-sur-Saône and proved the justice of the contentions of Cluny. Despite the lack of historiographical success, this work remains an extremely useful source for studying a man who made his ars rethorica a powerful weapon in the service of the reform. (shrink)

Peter Damian’s letter 119 De divina omnipotentia is characterized by two main issues: the dilemma about the God’s capacity to restore virginity to a woman and the question about the possibility of undoing the past. Despite the interweaving between these topics, they have to be distinguished in several respects. Aim of the paper will be, firstly, to isolate the two questions, starting with their textual loci; secondly, to focus on the dilemma about the divine capacity to undoing the past, showing (...) that the key of Peter Damian’s argument is the concept of eternity as an epistemic principle, that allows him to define the omnipotence, in the case of the action on temporal necessity, as a sort of second level property of God; finally, to compare the Damian’s solution with some contemporary theories, developed during the debate on omnipotence in the second half of the 20th century, in order to find continuity and discontinuity factors that can help to better understand the coherence and effectiveness of medieval and contemporary arguments. (shrink)

Peter Damian’s epistle 28, usually called Dominus vobiscum, shows a complex theological discussion. In fact, the author intertwines different subjects: the reform of the Church, the exaltation of monasticism, and, in particular, the primacy of the eremitical life. However, what is central in Peter Damian’s discourse is the Eucharistic sacrament, which the author considers from the standpoint of a theological sensitivity centered on the liturgical dimension of the celebration and on its spiritual and religious value. This contribution analyses Peter Damian’s (...) treatment of the Eucharistic sacrament, placing it in the historical-theological and doctrinal context of the disputes on the sacrament that animated the Church since the mid-eleventh century. (shrink)

Dominus Vobiscum is undoubtedly one of Peter Damian’s most original works, and has experienced a renewed interest thanks to the re-emergence of the ecclesiology of communion around Vatican II, but in-depth studies of the work as a whole are missing and its sources seem quite limited. In this analysis of the text and its argumentative structure, the conceptual development is built on the dialectic of contrasts, starting from the binomial of “solitudo pluralis” and “multitudo singularis”, typical of the hermit. The (...) theme is unfolded in its pneumatological, Christological and ecclesiological aspects. A formal analysis seems to demonstrate that the theses presented by Peter Damian are mainly the result of the power of rhetoric, which he undoubtedly mastered. (shrink)

In the second half of the eleventh century, monastic culture found the theoretical support for the project of ecclesiastical reform in which it participates in the ratio fidei, in the enhancement of the sciences and in the refinement of argumentative techniques, with which to adapt the behaviour of Christians to the Truth of the Mysteries and to the reality of the sacraments. The reform project that supports the need of the institutional Church to restore the powers and moral credit lost (...) in the last two centuries conflicts in several places with a more radical and universalistic conception of the Church as the people of God. And the stakes of this conflict must be sought not in a theoretical aspect but in the defence or downsizing of the Church’s magisterial function. In this context, Pier Damiani’s participation in the debate on Judaism manifests at least three general aspects, in addition to a constructive attitude on the relationship with cultural otherness. In the first place he confirms the attitude of monastic culture to the theological use of the arts; secondly, he explicitly identifies an ancillary role for reason with respect to faith; finally, he implicitly clarifies the ideological nature of the internal oppositions of the reformer movement. (shrink)

In literature Peter Damian has been often presented as an anti-dialectic thinker. Over time this statement has been subjected to careful historiographical revision. Today it is commonly accepted that the distinction between dialectic and anti-dialectic thinkers only partially describes the state of philosophy in the eleventh century. In fact, the relation between faith and reason is complex in Damian. The purpose of this paper is to reconsider this relation in the light of the significance Damian attributes to the notion of (...) contradiction. Reason must respect the principle of non-contradiction not only when it describes the natural world, but also when it explores the dimension of the mysteries of faith. (shrink)

This article deals with the most relevant philosophical side of Albert the Great’s analysis of alchemy, aimed at clarifying what alchemical transmutation consists in and whether this process can ultimately be accomplished by men. The Dominican master handles the problem differently in the earlier commentary on Lombardus’ Libri Sententiarum and in works like the De mineralibus, in which a more mature idea of the connection between art and nature is developed. In this respect, Albert’s interpretation intersects with Avicenna’s De congelatione, (...) a fundamental text for the Latin medieval debate on alchemy, whose reception has shaped his understanding of the alchemical art. The Dominican master gradually assumes a more lenient position towards the claims of the alchemical process of transmutation, which he explains by resorting to the similitudes between alchemy and medicine and the comparison of artificial transmutation with natural processes such as the generatio ex putrefactione and the natural formation of minerals. (shrink)

A linguagem mental explica o caráter significativo das linguagens falada e escrita: seus elementos e estrutura são identificados através de critérios teóricos que servem a este fim. Estes critérios parecem manter uma certa indeterminação em relação aos elementos e estruturas da linguagem mental, se se espera que eles decidam entre diferentes formas de apresentação possíveis. Esta expectativa, contudo, não é razoável dentro da filosofia ockhamiana. A teoria da linguagem mental pode desempenhar os papéis teóricos a ela destinados sem determinar a (...) forma que deveria ter uma linguagem canônica que a apresentasse. Há no entanto uma outra indeterminação na forma da proposição mental, relativa a ocorrências de proposições, que efetivamente ocorre nos textos ockhamianos : proposições mentais podem ser atos mentais simples e ter uma semântica composicional. Esta tese surpreendente nos lembra que embora a análise semântica que identifica estruturas da linguagem mental descreva algo que tem uma realidade psicológica, a descrição psicológica ela mesma deve recorrer a outros elementos da filosofia ockhamiana, e em particular, sua teoria dos atos mentais. (shrink)

The 13th-15th centuries were witness to lively and broad-ranging debates about the nature of persons. In this paper, I look at how the uses of ‘person’ in logical/grammatical, legal/political, and theological contexts overlap in the works of 13th-15th century contemplatives in the Latin West, such as Hadewijch, Meister Eckhart, and Catherine of Siena. After explicating the key concepts of individuality, dignity, and rationality, I show how these ideas combine with the contemplative use of first- and second-person perspectives, personification, and introspection (...) to yield a concept of 'person' that both prefigures Locke's classic 17th century definition and deeply influences the development of personalism. (shrink)

Among the most widely discussed of William of Ockham’s texts on ethics is his Quodlibet III, q. 14. But despite a large literature on this question, there is no consensus on what Ockham’s answer is to the central question raised in it, specifically, what obligations one would have if one were to receive a divine command to not love God. (Surprisingly, there is also little explicit recognition in the literature of this lack of consensus.) Via a close reading of the (...) text, I argue, contrary to much of the literature, that Ockham believes that if one were given this command, one would be obligated to refrain from loving God and would also be able to fulfill this obligation without any moral wrongdoing. Among other results, this study will help clarify Ockham’s much-discussed claim that loving God is “a necessarily virtuous act.”. (shrink)

This article aims to address the widespread thesis according to which medieval scholastics would not handle the idea of fine art. Based on a suggestion by Anzulewicz, the author shows how Albert the Great did understand the peculiarity of fine arts and put them in close relationship with liberal arts. There are fine arts, such as music, which are sought after for their own sake and can, therefore, be considered as fully liberal. In contrast to them, there are other arts (...) called mechanical, whose purpose is utilitarian. In the third place, there are other arts which, although also possessing some utility, are chosen for their own sake and are therefore partly liberal; we should place fine arts such as architecture in that group. The more art participates in reason and the beauty of the soul, the more it will be fine and liberal. The product is called to be a metaphor for the honest good of virtue. The very contemplation of this beauty embodied by art evokes an aesthetic enjoyment. In this way, we can see that Albert, no less than Aquinas, speaks of the pleasure linked to the contemplation of beauty. (shrink)

This paper explores the origins of the term "causa sine qua non" used by Durand de Saint-Pourçain to describe the role of material things in knowledge. I show that its technical meaning comes from the Stoics and was transmitted to the Middle Ages by Boethius' commentary on Cicero's Topics. The expression "sine qua non" here does not have the ordinary and restricted meaning of "indispensable", "necessary condition", which can also apply to direct, per se causes of an effect. In the (...) present context, sine qua non causes do not act on the effect in question, either as concomitant, secondary, or instrumental causes, or as remote causes. They act only on that which hinders the actualization of a potentiality, in order to remove that obstacle. For example, the removal of a support that prevented something from falling does not act on that thing, nor does it add anything to its tendency to fall; it simply enables that thing to exercise its own actualization. Similarly, in cognitive processes, external things do not impose anything on the soul, but simply give it the opportunity to actualize its faculties of its own accord. I situate Durand's use of this form of causality in the context of late 13th/early 14th century theories of cognition, among several other attempts to find an alternative theory to the standard Aristotelian model and to maintain the pure activity of the soul with respect to the body. (shrink)

In his Quadratura, Paul of Venice considers a sophism involving time and tense which appears to show that there is a valid inference which is also invalid. His argument runs as follows: consider this inference concerning some proposition A: A will signify only that everything true will be false, so A will be false. Call this inference B. Then B is valid because the opposite of its conclusion is incompatible with its premise. In accordance with the standard doctrine of ampliation, (...) Paul takes A to be equivalent to 'Everything that is or will be true will be false'. But he proceeds to argue that it is possible that B's premise ('A will signify only that everything true will be false') could be true and its conclusion false, so B is not only valid but also invalid. Thus A and B are the basis of an insoluble. In his Logica Parva, a self-confessedly elementary text aimed at students and not necessarily representing his own view, and in the Quadratura, Paul follows the solution found in the Logica Oxoniensis, which posits an implicit assertion of its own truth in insolubles like B. However, in the treatise on insolubles in his Logica Magna, Paul develops and endorses Swyneshed's solution, which stood out against this ''multiple-meanings'' approach in offering a solution that took insolubles at face value, meaning no more than is explicit in what they say. On this account, insolubles imply their own falsity, and that is why, in so falsifying themselves, they are false. We consider how both types of solution apply to B and how they complement each other. On both, B is valid. But on one (following Swyneshed), B has true premises and false conclusion, and contradictories can be false together; on the other (following the Logica Oxoniensis), the counterexample is rejected. (shrink)

scientific progress, natural philosophy of the Late Medieval Period is seen as playing the role of apologetics. For philosophers of science, with their repudiation of metaphysics, the task of providing a rational reconstruction of how scientific progress has occurred is nigh on impossible. Even explanations such as the Popperian and the Kuhnian strain under great difficulty and provide only partly satisfactory results. In his “Logik der Forschung” (1934) Karl Raimund Popper argues that metaphysics plays an accidental part in the emergence (...) of new scientific ideas. Correspondingly, in “Structure of Scientific Revolutions” (1962), by carrying out theoretical interpretations and classification of empirical facts without their metaphysical premises, Thomas Kuhn comes to the conclusion that natural science was formed under the influence of erroneous interpretations of Aristotelian natural philosophy presented by medieval natural philosophers. These are some of the reasons why medievalists are still made to defend late medieval natural philosophy from shallow convictions that at medieval universities nothing of any significance to contemporary science and philosophy took place at all. Seeking to render a fragment of a coherent reconstruction of the development of natural philosophy, I will investigate one idea of late medieval philosophy – the explanation of motion (impetus). The main statement of the paper holds that the ideas of late medieval natural philosophy have a decisive significance for the development of modern natural science instead of accidental or negative one. In the paper, following Aristotelian philosophical approach, premises of Jean Buridan’s theory of impetus will be exposed. Then, debates over the explanation of projectile motion are going to be presented, and finally, the necessary significance of this metaphysical idea on the modifications of natural philosophy is going to be ascertained. (shrink)

This essay discusses five main topoi in the Divine Comedy through which teachers might encourage students to explore the question of the Divine Comedy’s treatment of philosophy. These topoi are: (1) The Divine Comedy’s representations in Inferno of noble pagans who are allegorically or historically associated with philosophy or natural reason; (2) its treatment of the relationship between faith and reason and that relationship’s consequences for the text’s understanding of the respective authoritativeness of theology and philosophy; (3) representations in the (...) Divine Comedy that relate to the question of the practical value of philosophical (not to mention theological) speculation; (4) the text’s treatment of the respective merits of practical and contemplative activities; and (5) its implicit defense of philosophy’s authority with respect to ethical and political questions. (shrink)