Galileo asked in his Dialogue of the Two New Sciences what relationship exists between the size of the set of all natural numbers and the size of the set of all square natural numbers. Although one is a proper subset of the other, suggesting that there are strictly fewer squares than natural numbers, the existence of a simple one-to-one correspondence between the two sets suggests that they have, in fact, the same size. Cantor famously based the modern notion of cardinality (...) on the second intuition, but recent advances in mathematical logic (most notably, numerosity theory) have renewed an interest in the question whether Cantor’s way out of Galileo’s paradox was the only possible one. I present a new solution to Galileo’s paradox and argue that it is a better alternative to the Cantorian solution than numerosity theory. In fact, I argue that it is the best possible way out of Galileo's Paradox that can be based on the "Euclidean" intuition that the whole is always greater than any of its proper parts. (shrink)

Although Wilhelm Dilthey and Franz Brentano apparently were pursuing roughly the same objective—to offer a description of our mental functions and of their relations to objects—and both called their respective research programs ‘descriptive psychology’, they seem to have used the term to refer to two different methods of psychological research. In this article, I compare analyses of these differences. Against the reading of Orth but also against a possible application of recent relativist accounts of the epistemology of peer disagreement to (...) this case, I argue that their apparent shared objective is not enough to support an understanding of their views as two alternatives within a given historical or scientific context, or as a mutual peer disagreement. I show that the impression of a shared objective can be explained away as stemming from the influence of their teacher Adolf Trendelenburg, and I stress that the case of introspection strongly suggests that an account in terms of peer disagreement is not plausible. Finally, I conclude that the opposition between two traditions, Austrian philosophy and historicism, might be better suited to account for the dispute and its apparent common historical context. (shrink)

Unlike in physics, the category of thought experiment is not very common in biology. At least there are no classic examples that are as important and as well-known as the most famous thought experiments in physics, such as Galileo’s, Maxwell’s or Einstein’s. The reasons for this are far from obvious; maybe it has to do with the fact that modern biology for the most part sees itself as a thoroughly empirical discipline that engages either in real natural history or in (...) experimenting on real organisms rather than fictive ones. While theoretical biology does exist and is recognized as part of biology, its role within biology appears to be more marginal than the role of theoretical physics within physics. It could be that this marginality of theory also affects thought experiments as sources of theoretical knowledge. Of course, none of this provides a sufficient reason for thinking that thought experiments are really unimportant in biology. It is quite possible that the common perception of this matter is wrong and that there are important theoretical considerations in biology, past or present, that deserve the title of thought experiment just as much as the standard examples from physics. Some such considerations may even be widely known and considered to be important, but were not recognized as thought experiments. In fact, as we shall see, there are reasons for thinking that what is arguably the single most important biological work ever, Charles Darwin’s On the Origin of Species, contains a number of thought experiments. There are also more recent examples both in evolutionary and non-evolutionary biology, as we will show. Part of the problem in identifying positive examples in the history of biology is the lack of agreement as to what exactly a thought experiment is. Even worse, there may not be more than a family resemblance that unifies this epistemic category. We take it that classical thought experiments show the following characteristics: They serve directly or indirectly in the non-empirical epistemic evaluation of theoretical propositions, explanations or hypotheses. Thought experiments somehow appeal to the imagination. They involve hypothetical scenarios, which may or may not be fictive. In other words, thought experiments suppose that certain states of affairs hold and then try to intuit what would happen in a world where these suppositions are true. We want to examine in the following sections if there are episodes in the history of biology that satisfy these criteria. As we will show, there are a few episodes that might satisfy all three of these criteria, and many more if the imagination criterion is dropped or understood in a lose sense. In any case, this criterion is somewhat vague in the first place, unless a specific account of the imagination is presupposed. There will also be issues as to what exactly “non-empirical” means. In general, for the sake of discussion we propose to understand the term “thought experiment” here in a broad rather than a narrow sense here. We would rather be guilty of having too wide a conception of thought experiment than of missing a whole range of really interesting examples. (shrink)

Organismal death is foundational to the evolution of life, and many biological concepts such as natural selection and life history strategy are so fashioned only because individuals are mortal. Organisms, irrespective of their organization, are composed of basic functional units—cells—and it is our understanding of cell death that lies at the heart of most general explanatory frameworks for organismal mortality. Cell death can be exogenous, arising from transmissible diseases, predation, or other misfortunes, but there are also endogenous forms of death (...) that are sometimes the result of adaptive evolution. These endogenous forms of death—often labeled programmed cell death, PCD—originated in the earliest cells and are maintained across the tree of life. Here, we consider two problematic issues related to PCD (and cell mortality generally). First, we trace the original discoveries of cell death from the nineteenth century and place current conceptions of PCD in their historical context. Revisions of our understanding of PCD demand a reassessment of its origin. Our second aim is thus to structure the proposed origin explanations of PCD into coherent arguments. In our analysis we argue for the evolutionary concept of PCD and the viral defense-immunity hypothesis for the origin of PCD. We suggest that this framework offers a plausible account of PCD early in the history of life, and also provides an epistemic basis for the future development of a general evolutionary account of mortality. (shrink)

This paper introduces the category of b-frames as a new tool in the study of complete lattices. B-frames can be seen as a generalization of posets, which play an important role in the representation theory of Heyting algebras, but also in the study of complete Boolean algebras in forcing. This paper combines ideas from the two traditions in order to generalize some techniques and results to the wider context of complete lattices. In particular, we lift a representation theorem of Allwein (...) and MacCaull to a duality between complete lattices and b-frames, and we derive alternative characterizations of several classes of complete lattices from this duality. This framework is then used to obtain new results in the theory of complete Heyting algebras and the semantics of intuitionistic propositional logic. (shrink)

Uncertainty is recognized as a key issue in water resources research, amongst other sciences. Discussions of uncertainty typically focus on tools and techniques applied within an analysis, e.g. uncertainty quantification and model validation. But uncertainty is also addressed outside the analysis, in writing scientific publications. The language that authors use conveys their perspective of the role of uncertainty when interpreting a claim —what we call here “framing” the uncertainty. This article promotes awareness of uncertainty framing in four ways. 1) It (...) proposes a typology of eighteen uncertainty frames, addressing five questions about uncertainty. 2) It describes the context in which uncertainty framing occurs. This is an interdisciplinary topic, involving philosophy of science, science studies, linguistics, rhetoric, and argumentation. 3) We analyze the use of uncertainty frames in a sample of 177 abstracts from the Water Resources Research journal in 2015. This helped develop and tentatively verify the typology, and provides a snapshot of current practice. 4) Provocative recommendations promote adjustments for a more influential, dynamic science. Current practice in uncertainty framing might be described as carefully-considered incremental science. In addition to uncertainty quantification and degree of belief (present in ~5% of abstracts), uncertainty is addressed by a combination of limiting scope, deferring to further work (~25%) and indicating evidence is sufficient (~40%) – or uncertainty is completely ignored (~8%). There is a need for public debate within our discipline to decide in what context different uncertainty frames are appropriate. Uncertainty framing cannot remain a hidden practice evaluated only by lone reviewers. (shrink)

The development of phenomenology in nineteenth‐century German philosophy is that of a particular stream within the larger historical‐philosophical complex of Austro‐German philosophy. As the “grandfather of phenomenology” resp. the “disgusted grandfather of phenomenology,” but also as the key figure on the “Anglo‐Austrian Analytic Axis”, Brentano is at the source of the two main philosophical traditions in twentieth‐century philosophy. This chapter focuses mainly on his place in nineteenth‐century European philosophy and on the central themes and concepts in his philosophy that were (...) determinant in the development of the philosophy of his most gifted student: Edmund Husserl. Despite the variety of stances which Brentano expressed on ontology, metaphysics, and psychology over the course of his career, the five general principles remain central to his whole philosophy throughout: they have an important place in what could be called Brentano's philosophical worldview or system. By extension, they also are essential to his conception of phenomenology. (shrink)

Many theories about the teaching of logic and critical thinking take for granted that theoretical learning, the learning of formal rules for example, and its practical application are sufficient to master the tools taught and to take the habit of using them. However, this way of teaching is not efficient, a conclusion supported by much work in cognitive science. Approaching cognition evolutionarily with dual-process theories allows for an explanation of these insufficiencies and offers clues on how we could teach critical (...) thinking and logic more efficiently. In this article, we want to present this approach and explore these leads in order to make some pedagogical recommendations and lay the foundations of a framework. We will put forward an example of the application of this research program with philosophy for children. (shrink)

Many results in logic and mathematics rely on techniques that allow for concrete, often visual, representations of abstract concepts. A primary example of this phenomenon in logic is the distinction between syntax and semantics, itself an example of the more general duality in mathematics between algebra and geometry. Such representations, however, often rely on the existence of certain maximal objects having particular properties such as points, possible worlds or Tarskian first-order structures. -/- This dissertation explores an alternative to such representations (...) known as possibility semantics. Its core idea is to replace maximal objects with ordered systems of partial approximations. Although it originates in the semantics of modal logic and the representation of abstract ordered structures, I argue that it has far-reaching mathematical, foundational and philosophical significance, especially in the context of semiconstructive mathematics, a foundational framework that does not assume any fragment of the Axiom of Choice beyond the Axiom of Dependent Choices. -/- The dissertation is divided in two main parts. The first part explores various applications of the mathematical framework underlying possibility semantics to lattice theory and non-classical propositional logics. A major theme is the development of constructive dualities for various categories of lattices, which are related to standard non-constructive dualities via Vietoris constructions. -/- The second part of the dissertation explores the alternative foundational setting of semi-constructive mathematics, focusing on three applications of possibility semantics for classical first-order logic to the philosophy of the mathematical infinite. In particular, we introduce generic powers, a semi-constructive analogue of ultrapowers in classical model theory, and we explore the merits of these structures from a foundational, conceptual and historical viewpoint. (shrink)

Dans son article From Nihilism to Monism, Jonathan Schaffer montre que les partisans du Nihilisme de la Composition ont de bonnes raisons d’accepter le Monisme d’Existence plutôt que le Nihilisme. De manière analogue, nous souhaitons montrer ici que les partisans de l’Universalisme de la Composition ont de bonnes raisons d’accepter le Monisme de Priorité. Pour montrer cela, nous allons proposer et défendre l’argument suivant : Prémisse 1. Si l’Universalisme de la Composition est vrai alors le Cosmos existe. Prémisse 2. Si (...) le Cosmos existe alors le Cosmos est la seule entité concrète basique. Conclusion. Si l’Universalisme de la Composition est vrai alors le Cosmos est la seule entité concrète basique. (shrink)

Bernard Bolzano (1781–1848) is commonly thought to have attempted to develop a theory of size for infinite collections that follows the so-called part–whole principle, according to which the whole is always greater than any of its proper parts. In this paper, we develop a novel interpretation of Bolzano’s mature theory of the infinite and show that, contrary to mainstream interpretations, it is best understood as a theory of infinite sums. Our formal results show that Bolzano’s infinite sums can be equipped (...) with the rich and original structure of a non-commutative ordered ring, and that Bolzano’s views on the mathematical infinite are, after all, consistent. (shrink)

The experiments reported herein probe the visual cortical mechanisms that control near–far percepts in response to two-dimensional stimuli. Figural contrast is found to be a principal factor for the emergence of percepts of near versus far in pictorial stimuli, especially when stimulus duration is brief. Pictorial factors such as interposition (Experiment 1) and partial occlusion Experiments 2 and 3) may cooperate, as generally predicted by cue combination models, or compete with contrast factors in the manner predicted by the FACADE model. (...) In particular, if the geometrical conŽ guration of an image favors activation of cortical bipole grouping cells, as at the top of a T-junction, then this advantage can cooperate with the contrast of the conŽ guration to facilitate a near–far percept at a lower contrast than at an X-junction. Varying the exposure duration of the stimuli shows that the more balanced bipole competition in the X-junction case takes longer exposure times to resolve than the bipole competition in the T-junction case (Experiment 3). (shrink)

Résumé – Nous nous intéressons à l’enseignement et l’apprentissage de l’infini en classe de mathématiques en considérant les différences et les relations entre infini potentiel et infini actuel. Nous présentons les principaux éléments de notre étude philosophique, épistémologique et didactique, ainsi que trois situations visant à conduire un travail explicite avec les élèves sur ces questions en début de lycée. ---------------------------------------------------------------------------------------------------- --------------------------------- Abstract – We are interested in the teaching and learning of infinite in mathematics class, taking into account the relations (...) between potential infinite and actual infinite. We report the main elements of our current philosophical, epistemological and didactical study; we also present three mathematical situations that we consider relevant for this purpose and to be explored with 10 and 11 grade students. (shrink)

Theoretical frameworks concerning cell fate typically center on proximate causes to explain how cells know what type they are meant to become. While major advances in cell fate theory have been achieved by these mechanism-focused frameworks, there are some aspects of cell decision-making that require an evolutionary interpretation. While mechanistic biologists sometimes turn to evolutionary theory to gain insights about cell fate (cancer is a good example), it is not entirely clear in cell fate theory what insights evolutionary theory can (...) add, and why in some cases it is required for understanding cell fate. In this perspective we draw on our work on cellular mortality to illustrate how evolutionary theory provides an explanation for death being selected as one of the potential cell fates. Using our hypothesis for why some microbes in a community choose death as their fate, we suggest that some insights in cell fate theory are inaccessible to a theoretical framework that focuses solely on proximate causes. (shrink)

In the present paper, I try to shed some light on the Munich-Göttingen conception of essences, laws of essence, and ideal objects. I first start with a preliminary account of their conception of the synthetic a priori at the basis of their conception of essence (§2); I then offer a first characterization of this conception, which I label as metaphysical realism (§3), highlighting its key concept: foundation (§4). In the last four sections (§§5-8), I discuss different outcomes of this conception (...) of essences: the nature of laws of essences (§5), different categories of essences (§6) and anumericity (§7). (shrink)

Recent developments in generalized probability theory have renewed a debate about whether regularity (i.e., the constraint that only logical contradictions get assigned probability 0) should be a necessary feature of both chances and credences. Crucial to this debate, however, are some mathematical facts regarding the interplay between the existence of regular generalized probability measures and various cardinality assumptions. We improve on several known results in the literature regarding the existence of regular generalized probability measures. In particular, we give necessary and (...) sufficient conditions for the existence of regular generalized probability measures defined on the whole powerset of any sample space. (shrink)

There are empirical grounds to doubt the effectiveness of a common and intuitive approach to teaching debiasing strategies in critical thinking courses. We summarize some of the grounds before suggesting a broader taxonomy of debiasing strategies. This four-level taxonomy enables a useful diagnosis of biasing factors and situations, and illuminates more strategies for more effective bias mitigation located in the shaping of situational factors and reasoning infrastructure—sometimes called “nudges” in the literature. The question, we contend, then becomes how best to (...) teach the construction and use of such infrastructures. (shrink)

The low representation (< 30%) of women in philosophy in English-speaking countries has generated much discussion, both in academic circles and the public sphere. It is sometimes suggested (Haslanger 2009) that unconscious biases, acting at every level in the field, may be grounded in gendered schemas of philosophers and in the discipline more widely, and that actions to make philosophy a more welcoming place for women should address such schemas. However, existing data are too limited to fully warrant such an (...) explanation, which therefore will not satisfy those in favor of the status quo or those who argue against the need to address gender imbalance. In this paper, we propose measures to improve the profession that ought to be implemented without referring explicitly to this underrepresentation or to the climate for women and other underrepresented groups. Such recommendations are based on empirical research already carried out in other disciplines and do not rest on whether it is possible to identify the cause of this low representation. We argue that we need not wait for new or better data to ensure that fairer practices are enacted for women, other underrepresented groups, and everybody else, if only out of precaution. (shrink)

Introduction au numéro spécial de la Revue philosophique de la France et de l'étranger en hommage au centenaire de la mort de Franz Brentano.

From the point of view of Husserl's critique of empiricist theories of abstraction in the Logical Investigations, it seems that Brentano and most of his students would have endorsed the presupposition of Locke's theory of abstraction, which Husserl labels as the 'psychological hypostatization of the general'. For Husserl himself, but also for most of his followers, the motivation behind this critique is that the descriptive psychology of the school of Brentano leads to psychologism if one doesn't accept Platonic ideal objects. (...) In the following article, I argue that Husserl's critique doesn't do justice to the accounts of abstraction developed in the school of Brentano. I take here the particular case of Carl Stumpf, showing that not only does Husserl's accusation miss its target, but also that it attributes indirectly to Stumpf a position that he didn't defend. I suggest that even before the Logical Investigations, Stumpf formulated the basis of an account of abstraction in terms of generalization, an account which will later turn out to be in many ways compatible with Husserl's theory of Spezies in the Logical Investigations, and which provide a viable alternative both to Platonism and to empiricism, thereby calling for a reassessment of the positions on abstraction in the School of Brentano. (shrink)

Conscious states—state that there is something it is like to be in—seem both rich or full of detail and ineffable or hard to fully describe or recall. The problem of ineffability, in particular, is a longstanding issue in philosophy that partly motivates the explanatory gap: the belief that consciousness cannot be reduced to underlying physical processes. Here, we provide an information theoretic dynamical systems perspective on the richness and ineffability of consciousness. In our framework, the richness of conscious experience corresponds (...) to the amount of information in a conscious state and ineffability corresponds to the amount of information lost at different stages of processing. We describe how attractor dynamics in working memory would induce impoverished recollections of our original experiences, how the discrete symbolic nature of language is insufficient for describing the rich and high-dimensional structure of experiences, and how similarity in the cognitive function of two individuals relates to improved communicability of their experiences to each other. While our model may not settle all questions relating to the explanatory gap, it makes progress toward a fully physicalist explanation of the richness and ineffability of conscious experience—two important aspects that seem to be part of what makes qualitative character so puzzling. (shrink)

Durand of Saint-Pourçain's earliest treatment of cognitive habits is contained in his Sentences Commentary, Book 3, Distinction 23. In the first two questions, he discusses the ontological status of habits and their causal role, establishing his own unique view alongside the views of Godfrey of Fontaines and Hervaeus Natalis. What follows is the Latin text and an English translation of Durand's Sentences (A/B) III, d. 23, qq. 1-2.

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)

Some of my mental states are conscious and some of them are not. Sometimes I am so focused on the wine in front of me that I am unaware that I am thinking about it; but sometimes, of course, I take a reflexive step back and become aware of my thinking about the wine in front of me. What marks the difference between a conscious mental state and an unconscious one? In this paper, I focus on Durand of St.-Pourçain’s (...) rejection of the higher-order theory of state consciousness, according to which a mental act is conscious when there is another, suitably related, mental (reflex) act that exists at the same time with it. Durand rejects such higher-order theories on the grounds that they violate the thesis that a given mental power can have or elicit only one mental act at a given time. I first go over some of Durand’s general arguments for this thesis. I then turn to Durand’s application of the thesis to the issue of state consciousnes and reflex acts. I close by considering the objection that Durand’s same-order theory of state consciousness makes consciousness ubiquitous. (shrink)

Early modern philosophers, such as Descartes and Spinoza, appeal to a theory of modes in their metaphysics. Recent commentators have argued that such a theory of modes has Francesco Suárez as its primary source. In this paper, I explore one explicit source for Suárez’s view: Durand of St.-Pourçain, an early fourteenth-century philosopher. My aim will be mainly expository: I will put forward Durand’s theory of modes, thus correcting the persistent belief that there was no well-defined theory of modes (...) prior to Suárez. First, I will sketch out the historical and theological context in which Durand developed his theory, briefly canvassing some of the items that he treats as modes as well. Second, I will go over the distinctive features that Durand thinks modes have. Finally, I will close with some reflection on why we should countenance modes in our ontology. Along the way, I will correct a few misconceptions about Durand’s theory of modes. (shrink)

The present dissertation concerns cognitive psychology—theories about the nature and mechanism of perception and thought—during the High Middle Ages (1250–1350). Many of the issues at the heart of philosophy of mind today—intentionality, mental representation, the active/passive nature of perception—were also the subject of intense investigation during this period. I provide an analysis of these debates with a special focus on Durand of St.-Pourçain, a contemporary of John Duns Scotus and William of Ockham. Durand was widely recognized as a (...) leading philosopher until the advent of the early modern period, yet his views have been largely neglected in the last century. The aim of my dissertation, then, is to provide a new understanding of Durand’s cognitive psychology and to establish a better picture of developments in cognitive psychology during the period. -/- Most philosophers in the High Middle Ages held, in one form or another, the thesis that most forms of cognition (thought, perception) involve the reception of the form of the object into the mind. Such forms in the mind explain what a given episode of cognition is about, its content. According to what has been called the conformality theory of content, the content of our mental states is fixed by this form in the mind. Durand rejects this thesis, and one of the primary theses that I pursue is that Durand replaces the conformality theory of content with a causal theory of content, according to which the content of our mental states is fixed by its cause. When I think about Felix and not Graycat, this is to be explained not by the fact that I have in my mind the form of Felix and not Graycat, but rather by the fact that Felix and not Graycat caused my thought. -/- This is both a controversial interpretation and, indeed, a controversial theory. It is a controversial interpretation because Durand seems to reject the thesis that objects are the causes of our mental states. In the first half of the present dissertation, I argue that Durand does not reject this thesis but he rejects another nearby thesis: that objects as causes give to us ‘forms’. On Durand’s view, an object causes a mental state even though it does not give to us a new ‘form’. In the second half of the dissertation I defend Durand’s causal theory of content against salient objections to it. (shrink)

According to a standard interpretation of Aristotle, a material substance, like a dog, is a hylomorphic composite of matter and form, its “essential” parts. Is such a composite some thing in addition to its essential parts as united? The moderate reductionist says “no,” whereas the anti-reductionist says “yes.” In this paper, I will clarify and defend Durand of St.-Pourçain’s surprisingly influential version of moderate reductionism, according to which hylomorphic composites are nothing over and above their essential parts and the (...) union of those parts, where this union is explained by the presence of two modes: a mode of inherence on the side of form and a mode of substanding on the side of matter. (shrink)

We are affected by the world: when I place my hand next to the fire, it becomes hot, and when I plunge it into the bucket of ice water, it becomes cold. What goes for physical changes also goes for at least some mental changes: when Felix the Cat leaps upon my lap, my lap not only becomes warm, but I also feel this warmth, and when he purrs, I hear his purr. It seems obvious, in other words, that perception (...) (at least, and at least under ordinary conditions) is a matter of being affected by the agency of perceptible objects. Call this doctrine affectionism. Durand of St.-Pourçain rejects affectionism. The paper has three parts. In the first part, I sketch, briefly, what motivates Durand to reject affectionism. In the second part, I will take up the affectionist doctrine as defended by Durand's older contemporary at Paris, Godfrey of Fontaines, who holds that the object of all our mental acts (not just perceptions, but also thoughts and desires) is the efficient cause of those acts, or, in other words, all mental acts (not just perception) come about owing to the affection of the relevant mental faculty by the agency of the object. As it turns out, Godfrey develops a celebrated argument against the thesis that the object is not the efficient cause but a mere sine qua non cause. Hence his position offers a challenge to Durand's position, a challenge, I argue in the third part, Durand meets. (shrink)

Most philosophers in the High Middle Ages agreed that what we immediately perceive are external objects. Yet most philosophers in the High Middle Ages also held, following Aristotle, that perception is a process wherein the perceiver takes on the form or likeness of the external object. This form or likeness — called a species — is a representation by means of which we immediately perceive the external object. Thomas Aquinas defended this thesis in one form, and Durand of St.-Pourçain, (...) his Dominican successor, rejects it. This paper explores Durand's novel criticism of Aquinas's species-theory of cognition. I first develop and defend a new interpretation of Durand's central criticism of Aquinas's theory of cognition. I close with some considerations about Durand's alternative to the theory. -/- . (shrink)

The relation-theory of mental acts proposes that a mental act is a kind of relative entity founded upon the mind and directed at the object of perception or thought. While most medieval philosophers recognized that there is something importantly relational about thought, they nevertheless rejected the view that mental acts are wholly relations. Rather, the dominant view was that a mental act is either in whole or part an Aristotelian quality added to the mind upon which such a relation to (...) the object can be founded. In this paper, I examine Durand of St.-Pourçain's defense of the relation-theory of mental acts against two objections raised against it: the first from John Duns Scotus, among others, and the second from an anonymous Thomist and Adam Wodeham. -/- . (shrink)

As we now know, most, if not all, philosophers in the High Middle Ages agreed that what we immediately perceive are external objects and that the immediate object of perception must not be some image present to the mind. Yet most — but not all — philosophers in the High Middle Ages also held, following Aristotle, that perception is a process wherein the percipient takes on the likeness of the external object. This likeness — called a species — is a (...) representation (of some sort) by means of which we immediately perceive external objects. But how can perception be at once direct — or immediate — and at the same time by way of representations? The usual answer here was that the species represents the external object to some percipient even though the species itself is not at all perceived: the species is that by which I perceive and not that which I perceive. John Buridan defends this traditional view — call it direct realism with representations. However, just a couple of decades before Buridan, one of the more important philosophers at Paris, Durand of St.-Pourçain, had already rejected direct realism with representation. Durand defends what I will call direct realism without representations. On his view, a species is not at all necessary during overtly direct forms of perception, neither as cause nor as representation. This paper has two parts. In the first part, I will discuss some of the more interesting arguments that Durand makes against direct realism with representations. In the second part, I will look at Buridan's defense of the view. -/- . (shrink)

The 14th-century Dominican theologian and philosopher Durand of Saint-Pourçain was among the intellectuals who took part in the medieval debate on virginity, especially on the relationship between virginity and marriage. This paper discusses a question of his Sentences Commentary (Super Sent., II, d. 20, q. 2), in which Durand poses the question of “whether or not there would have been a loss of virginity in marriage” (utrum in actu matrimoniali fuisset amissio virginitatis) both in statu innocentiae and in (...) statu post peccatum. This paper shows how Durand’s solution to the problem is in opposition to Augustine’s and Thomas Aquinas’s views, based on formal and material aspects of virginity. (shrink)

En esta entrevista, el preservador Olaff Durand narra su experiencia como miembro de una organización ecológica, la cual se ha caracterizado por los cuidados que se han realizado al medioambiente. Estas actividades las han venido haciendo siempre de manera presencial, aunque en tiempo de pandemia se ha recurrido a virtualidad. Sin embargo, la labor y los proyectos ecológicos que él relata demuestran que ha habido un trabajo constante de concientización y de educación ambiental para los ciudadanos. En fin, esta (...) conversación será de utilidad para futuros investigadores e interesados en la materia, ya que podrán conocer cuáles son y serán las medidas sociales que adoptan los integrantes de esta organización ecológica para contrarrestar cualquier forma de contaminación en este siglo XXI. (shrink)

Once Socrates has thought something, he comes to acquire an item such that he is then able to think such thoughts again when he wants, and he can, all other things being equal, do this with more ease than he could before. This item that he comes to acquire medieval philosophers called a cognitive habit which most medieval philosophers maintained was a new quality added to Socrates' intellect. However, some disagreed. In this paper, I will examine an interesting alternative theory (...) put forward by Durand of Saint-Pourçain and Prosper de Reggio Emilia about the location of cognitive habits. On their view, cognitive habits are not to be located in the intellect but in something on the side of the body or sensitive soul. (shrink)

Once Socrates has thought something, he comes to acquire an item such that he is then able to think such thoughts again when he wants, and he can, all other things being equal, do this with more ease than he could before. This item that he comes to acquire medieval philosophers called a cognitive habit. Most medieval philosophers maintained this item was a new quality added to Socrates’s intellect. However, some disagreed. In this paper, I will examine an interesting alternative (...) theory put forward by Durand of Saint-Pourçain and Prosper de Reggio Emilia about the location of cognitive habits. On their view, cognitive habits are not to be located in the intellect but in something on the side of the body or sensitive soul. (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)

In his Bipartitum in morali philosophia, the Scottish philosopher William of Manderston, a pupil of John Mair, and an Ockhamist philosopher, is quoting a text of Antonin of Padua who distinguishes the factum opened to a juridical qualification from the inner belief, known by God alone. Quoting the same text, the authors of the Malleus maleficarum try hard to distinguish three distinct fields, the inner beliefs which belongs to God, the exterior acts, the facts, which are relevant for the judges, (...) and the third field, which establishes a relation between the fact and the beliefs. This third field is proper to the inquisitors. Against this ethics of imputability, Manderston, relying on Ockham’s ethics, advocates an intentionalist ethics which depends on a sharp separation between interiority and exteriority. The soteriological dimension of the question entirely belongs to the inner life, whereas the exteriority is strictly disciplinary. By his radicality, Manderston appears as a paradigm of the modern dichotomy between conscience and law, Paolo Prodi once pointed out as a cornerstone of the religious modernity. (shrink)

This article proposes the thesis that archeofuturism is a postmodern project of the International Alt-Right (IAR). By postmodern project we mean that: i) it is a project for a time after modernity; and ii) it is a project that, due to its content, can be classified as related to the ideas against modernity called postmodernism. As it is part of the IAR, archeofuturism is also a project of a fascist or far-right nature. To prove our thesis, we will first analyze (...) the Archefouturism developed by the French political scientist Guillaume Faye, a member of the IAR. Then what is IAR will be defined and its relationship with postmodernism will be evidenced. Finally, based on that connection called reactionary postmodernism, the existence of other archeofuturists theses that combine fascist rhetoric with postmodernism will be proposed. (shrink)

English translation of paper title: Action and Passion in the Renaissance. The Womanly and the Manly in Agrippa, Postel, and Bovelles. This paper uses the philosophy of Nicholas of Cusa and the Querelle des Femmes as historic backgrounds for how Agrippa of Nettesheim, Guillaum Postel, and Charles de Bovelles reconcile the notions of "male" and "female" in their respective philosophies.

This article argues that Clauberg defends the theory of concurrentism concerning the relationship between divine and secondary causality. It does so by examining Clauberg's theory of corporeal causation in light of his doctrines of cause in general and of corporeal substance. Clauberg's work represents one of the first attempts to reconcile Cartesian physics with the traditional doctrine in theology, according to which both God and created substances are true and immediate causes of all natural effects, in opposition to the occasionalist (...) trend which would soon develop in the Cartesian school as well as to the conservationist alternative of Durand de Saint-Pourçain. -/- Cet article soutient que Clauberg défend la théorie du concurrentisme sur la relation entre la causalité divine et la causalité seconde. Il le fait en examinant la théorie de la causalité corporelle de Clauberg à la lumière de ses doctrines de la cause en général et de la substance corporelle. L'œuvre de Clauberg représente l’une des premières tentatives de réconcilier la physique cartésienne avec la doctrine théologique traditionelle, selon laquelle Dieu et les substances créées sont des causes vrais et immédiates de tout effet naturel, en opposition au courant occasionnaliste qui se développera bientôt dans l'école cartésienne ainsi qu'à l'alternative conservationniste de Durand de Saint-Pourçain. (shrink)