The traditional Lewis–Stalnaker semantics treats all counterfactuals with an impossible antecedent as trivially or vacuously true. Many have regarded this as a serious defect of the semantics. For intuitively, it seems, counterfactuals with impossible antecedents—counterpossibles—can be non-trivially true and non-trivially false. Whereas the counterpossible "If Hobbes had squared the circle, then the mathematical community at the time would have been surprised" seems true, "If Hobbes had squared the circle, then sick children in the mountains of Afghanistan at the time would (...) have been thrilled" seems false. Many have proposed to extend the Lewis–Stalnaker semantics with impossible worlds to make room for a non-trivial or non-vacuous treatment of counterpossibles. Roughly, on the extended Lewis–Stalnaker semantics, we evaluate a counterfactual of the form "If A had been true, then C would have been true" by going to closest world—whether possible or impossible—in which A is true and check whether C is also true in that world. If the answer is "yes", the counterfactual is true; otherwise it is false. Since there are impossible worlds in which the mathematically impossible happens, there are impossible worlds in which Hobbes manages to square the circle. And intuitively, in the closest such impossible worlds, sick children in the mountains of Afghanistan are not thrilled—they remain sick and unmoved by the mathematical developments in Europe. If so, the counterpossible "If Hobbes had squared the circle, then sick children in the mountains of Afghanistan at the time would have been thrilled" comes out false, as desired. In this paper, I will critically investigate the extended Lewis–Stalnaker semantics for counterpossibles. I will argue that the standard version of the extended semantics, in which impossible worlds correspond to maximal, logically inconsistent entities, fails to give the correct semantic verdicts for many counterpossibles. In light of the negative arguments, I will then outline a new version of the extended Lewis–Stalnaker semantics that can avoid these problems. (shrink)

Advanced AI systems are rapidly making their way into medical research and practice, and, arguably, it is only a matter of time before they will surpass human practitioners in terms of accuracy, reliability, and knowledge. If this is true, practitioners will have a prima facie epistemic and professional obligation to align their medical verdicts with those of advanced AI systems. However, in light of their complexity, these AI systems will often function as black boxes: ​the details of their contents, calculations, (...) and procedures cannot be meaningfully understood by human practitioners. ​When AI systems reach this level of complexity, we can also speak of black-box medicine. In this paper, we want to argue that black-box medicine conflicts with core ideals of patient-centered medicine. In particular, we claim, ​black-box medicine is not conducive for supporting informed decision making based on shared information, shared deliberation, and shared mind between practitioner and patient. (shrink)

In this paper, I investigate whether we can use a world-involving framework to model the epistemic states of non-ideal agents. The standard possible-world framework falters in this respect because of a commitment to logical omniscience. A familiar attempt to overcome this problem centers around the use of impossible worlds where the truths of logic can be false. As we shall see, if we admit impossible worlds where “anything goes” in modal space, it is easy to model extremely non-ideal agents that (...) are incapable of performing even the most elementary logical deductions. A much harder, and considerably less investigated challenge is to ensure that the resulting modal space can also be used to model moderately ideal agents that are not logically omniscient but nevertheless logically competent. Intuitively, while such agents may fail to rule out subtly impossible worlds that verify complex logical falsehoods, they are nevertheless able to rule out blatantly impossible worlds that verify obvious logical falsehoods. To model moderately ideal agents, I argue, the job is to construct a modal space that contains only possible and non-trivially impossible worlds where it is not the case that “anything goes”. But I prove that it is impossible to develop an impossible-world framework that can do this job and that satisfies certain standard conditions. Effectively, I show that attempts to model moderately ideal agents in a world-involving framework collapse to modeling either logical omniscient agents, or extremely non-ideal agents. (shrink)

Possible-worlds accounts of mental or linguistic content are often criticized for being too coarse-grained. To make room for more fine-grained distinctions among contents, several authors have recently proposed extending the space of possible worlds by "impossible worlds". We argue that this strategy comes with serious costs: we would effectively have to abandon most of the features that make the possible-worlds framework attractive. More generally, we argue that while there are intuitive and theoretical considerations against overly coarse-grained notions of content, the (...) same kinds of considerations also prohibit an overly fine-grained individuation of content. An adequate notion of content, it seems, should have intermediate granularity. However, it is hard to construe a notion of content that meets these demands. Any notion of content, we suggest, must be either implausibly coarse-grained or implausibly fine-grained (or both). (shrink)

It has recently been argued that a sensitivity theory of knowledge cannot account for intuitively appealing instances of higher-order knowledge. In this paper, we argue that it can once careful attention is paid to the methods or processes by which we typically form higher-order beliefs. We base our argument on what we take to be a well-motivated and commonsensical view on how higher-order knowledge is typically acquired, and we show how higher-order knowledge is possible in a sensitivity theory once this (...) view is adopted. (shrink)

Pluralistic ignorance is a socio-psychological phenomenon that involves a systematic discrepancy between people’s private beliefs and public behavior in certain social contexts. Recently, pluralistic ignorance has gained increased attention in formal and social epistemology. But to get clear on what precisely a formal and social epistemological account of pluralistic ignorance should look like, we need answers to at least the following two questions: What exactly is the phenomenon of pluralistic ignorance? And can the phenomenon arise among perfectly rational agents? In (...) this paper, we propose answers to both these questions. First, we characterize different versions of pluralistic ignorance and define the version that we claim most adequately captures the examples cited as paradigmatic cases of pluralistic ignorance in the literature. In doing so, we will stress certain key epistemic and social interactive aspects of the phenomenon. Second, given our characterization of pluralistic ignorance, we argue that the phenomenon can indeed arise in groups of perfectly rational agents. This, in turn, ensures that the tools of formal epistemology can be fully utilized to reason about pluralistic ignorance. (shrink)

In a possible world framework, an agent can be said to know a proposition just in case the proposition is true at all worlds that are epistemically possible for the agent. Roughly, a world is epistemically possible for an agent just in case the world is not ruled out by anything the agent knows. If a proposition is true at some epistemically possible world for an agent, the proposition is epistemically possible for the agent. If a proposition is true at (...) all epistemically possible worlds for an agent, the proposition is epistemically necessary for the agent, and as such, the agent knows the proposition. -/- This framework presupposes an underlying space of worlds that we can call epistemic space. Traditionally, worlds in epistemic space are identified with possible worlds, where possible worlds are the kinds of entities that at least verify all logical truths. If so, given that epistemic space consists solely of possible worlds, it follows that any world that may remain epistemically possible for an agent verifies all logical truths. As a result, all logical truths are epistemically necessary for any agent, and the corresponding framework only allows us to model logically omniscient agents. This is a well-known consequence of the standard possible world framework, and it is generally taken to imply that the framework cannot be used to model non-ideal agents that fall short of logical omniscience. -/- A familiar attempt to model non-ideal agents within a broadly world involving framework centers around the use of impossible worlds where the truths of logic can be false. As we shall see, if we admit impossible worlds where “anything goes” in epistemic space, it is easy to avoid logical omniscience. If any logical falsehood is true at some impossible world, then any logical falsehood may remain epistemically possible for some agent. As a result, we can use an impossible world involving framework to model extremely non-ideal agents that do not know any logical truths. -/- A much harder, and considerably less investigated challenge is to ensure that the resulting epistemic space can also be used to model moderately ideal agents that are not logically omniscient but nevertheless logically competent. Intuitively, while such agents may fail to rule out impossible worlds that verify complex logical falsehoods, they are nevertheless able to rule out impossible worlds that verify obvious logical falsehoods. To model such agents, we need a construction of a non-trivial epistemic space that partly consists of impossible worlds where not "anything goes". This involves imposing substantive constraints on impossible worlds to eliminate from epistemic space, say, trivially impossible worlds that verify obvious logical falsehoods. -/- The central aim of this dissertation is to investigate the nature of such non-trivially impossible worlds and the corresponding epistemic spaces. To flag my conclusions, I argue that successful constructions of epistemic spaces that can safely navigate between the Charybdis of logical omniscience and the Scylla of of “anything goes” are hard, if not impossible to find. (shrink)

When a proposition might be the case, for all an agent knows, we can say that the proposition is epistemically possible for the agent. In the standard possible worlds framework, we analyze modal claims using quantification over possible worlds. It is natural to expect that something similar can be done for modal claims involving epistemic possibility. The main aim of this paper is to investigate the prospects of constructing a space of worlds—epistemic space—that allows us to model what is epistemically (...) possible for ordinary, non-ideally rational agents like you and me. I will argue that the prospects look dim for successfully constructing such a space. In turn, this will make a case for the claim that we cannot use the standard possible worlds framework to model what is epistemically possible for ordinary agents. (shrink)

Logicians commonly speak in a relatively undifferentiated way about pre-euler diagrams. The thesis of this paper, however, is that there were three periods in the early modern era in which euler-type diagrams (line diagrams as well as circle diagrams) were expansively used. Expansive periods are characterized by continuity, and regressive periods by discontinuity: While on the one hand an ongoing awareness of the use of euler-type diagrams occurred within an expansive period, after a subsequent phase of regression the entire knowledge (...) about the systematic application and the history of euler-type diagrams was lost. I will argue that the first expansive period lasted from Vives (1531) to Alsted (1614). The second period began around 1660 with Weigel and ended in 1712 with lange. The third period of expansion started around 1760 with the works of Ploucquet, euler and lambert. Finally, it is shown that euler-type diagrams became popular in the debate about intuition which took place in the 1790s between leibnizians and Kantians. The article is thus limited to the historical periodization between 1530 and 1800. (shrink)

The traditional possible-worlds model of belief describes agents as ‘logically omniscient’ in the sense that they believe all logical consequences of what they believe, including all logical truths. This is widely considered a problem if we want to reason about the epistemic lives of non-ideal agents who—much like ordinary human beings—are logically competent, but not logically omniscient. A popular strategy for avoiding logical omniscience centers around the use of impossible worlds: worlds that, in one way or another, violate the laws (...) of logic. In this paper, we argue that existing impossible-worlds models of belief fail to describe agents who are both logically non-omniscient and logically competent. To model such agents, we argue, we need to ‘dynamize’ the impossible-worlds framework in a way that allows us to capture not only what agents believe, but also what they are able to infer from what they believe. In light of this diagnosis, we go on to develop the formal details of a dynamic impossible-worlds framework, and show that it successfully models agents who are both logically non-omniscient and logically competent. (shrink)

in recent years, the research on Schopenhauer has shown a change in the interpretation of his main work, «The World as Will and Presentation», from (1) a normative and linear instruction which guides the reader from idealism to mysticism, pessimism and nothingness to (2) value-free and independent descriptions of the world with all phenomena (like idealism, mysticism, nothingness etc.) in it. thus Schopenhauer’s main work has become an empirical or baconian approach—something like a «philosophical cosmography»—. this fundamental change of interpretation (...) radically puts into question what Schopenhauer means by characterizing his main work as an «organic system». the present paper attempts to give an answer to this question, reviewing the self-reflexive, methodological and metaphilosophical hints which Schopenhauer gives in the first volume of his «World» («as Will and presentation»). (shrink)

Civil society participation in international and European governance is often promoted as a remedy to its much-lamented democratic deficit. We argue in this paper that this claim needs refinement because civil society participation may serve two quite different purposes: it may either enhance the democratic accountability of intergovernmental organisations and regimes, or the epistemic quality of rules and decisions made within them. (...).

Orthodox Bayesianism is a highly idealized theory of how we ought to live our epistemic lives. One of the most widely discussed idealizations is that of logical omniscience: the assumption that an agent’s degrees of belief must be probabilistically coherent to be rational. It is widely agreed that this assumption is problematic if we want to reason about bounded rationality, logical learning, or other aspects of non-ideal epistemic agency. Yet, we still lack a satisfying way to avoid logical omniscience within (...) a Bayesian framework. Some proposals merely replace logical omniscience with a different logical idealization; others sacrifice all traits of logical competence on the altar of logical non-omniscience. We think a better strategy is available: by enriching the Bayesian framework with tools that allow us to capture what agents can and cannot infer given their limited cognitive resources, we can avoid logical omniscience while retaining the idea that rational degrees of belief are in an important way constrained by the laws of probability. In this paper, we offer a formal implementation of this strategy, show how the resulting framework solves the problem of logical omniscience, and compare it to orthodox Bayesianism as we know it. (shrink)

The concept of the person is widely assumed to be indispensable for making a rights claim. But a survey of the concept's appearance in legal discourse reveals that the concept is stretched to the breaking point. Personhood stands at the center of debates as diverse as the legal status of embryos and animals to the rights and responsibilities of corporations and nations. This Note argues that personhood is a cluster concept with distinct components: the biological concept of the human being, (...) the notion of a rational agent, and unity of consciousness. Use of these component concepts (in lieu of the concept of the person) in legal reasoning would promote greater systematicity and coherence. (shrink)

At least since Socrates, philosophy has been understood as the desire for acquiring a special kind of knowledge, namely wisdom, a kind of knowledge that human beings ordinarily do not possess. According to ancient thinkers this desire may result from a variety of causes: wonder or astonishment, the bothersome or even painful realization that one lacks wisdom, or encountering certain hard perplexities or aporiai. As a result of this basic understanding of philosophy, Greek thinkers tended to regard philosophy as an (...) activity of inquiry (zētēsis) rather than as a specific discipline. Discussions concerning the right manner of engaging in philosophical inquiry – what methodoi or routes of inquiry were best suited to lead one to wisdom – became an integral part of ancient philosophy, as did the question how such manners or modes of inquiry are related to, and differ from, other types of inquiry, for instance medical or mathematical. In this special issue of History of Philosophy & Logical Analysis, we wish to concentrate in particular on ancient modes of inquiry. (shrink)

The digression of Plato’s Theaetetus (172c2–177c2) is as celebrated as it is controversial. A particularly knotty question has been what status we should ascribe to the ideal of philosophy it presents, an ideal centered on the conception that true virtue consists in assimilating oneself as much as possible to god. For the ideal may seem difficult to reconcile with a Socratic conception of philosophy, and several scholars have accordingly suggested that it should be read as ironic and directed only at (...) the dramatic character Theodorus. When interpreted with due attention to its dramatic context, however, the digression reveals that the ideal of godlikeness, while being directed at Theodorus, is essentially Socratic. The function of the passage is to introduce a contemplative aspect of the life of philosophy into the dialogue that contrasts radically with the political-practical orientation characteristic of Protagoras, an aspect Socrates is able to isolate as such precisely because he is conversing with the mathematician Theodorus. (shrink)

A particularly promising trail on the search for forgotten logic diagrams leads to Upper Lusatia in the 17th century, more precisely to Christian Weise and his students. Samuel Grosser, who later became rector in Görlitz, and Johann Christian Lange, who later became professor of logic at the University of Gießen, are the most prominent to have published remarkable logic diagrams. Even more remarkable, however, is the fact that Lange's interest in these diagrams ultimately gave rise to the idea of building (...) a logic machine. (shrink)

“Dialectic” has been a matter of growing interest in contemporary philosophy. The present article analyzes dialectical methods and positions them by reference to two paradigmatic texts of German idealism and analytic philosophy, i.e. J.G. Fichte’s Science of Knowing (1804) and J. McDowell’s Mind and World. Both dialectical approaches will be interpreted with regard to their contribution in the debate on reductionism and anti-reductionism: both Fichte and McDowell claim that philosophical positions and logical terms stand in a dualistic relationship to one (...) another, on the one hand, but are separated by a gulf, on the other. I will argue that for McDowell dialectic seems to be an alternative to one-sided reductionisms as well as to normal anti-reductionistic holism. Furthermore, for Fichte dialectic is an adequate method for describing the relationship of reductionism and anti-reductionism itself. Both see in dialectic a technique for bridging the gulf between binary opposite terms of logic as well as mutually exclusive positions, such as mind and world, subject and object, or idealism and realism. (shrink)

In Critique of Pure Reason Kant speaks about motion, as action of the subject in connection with the actions by which we describe a space, such as drawing a line or constructing a circle. In a 1992-paper in Kant-Studien I argued that this is one important piece of textual evidence for the so-called externalist interpretation, according to which the transcendental conditions of experience and indeed all the a priori elements in Kant’s system are public, depending upon overt action. Konstantin Pollok (...) has criticized my reading, arguing that the relevant use of the term “motion” here is just metaphorical, and considering some central Kantian doctrines that he thinks refutes the externalist interpretation. The present paper defends the externalist interpretation against Pollok’s charges. (shrink)

One determining characteristic of contemporary sociopolitical systems is their power over increasingly large and diverse populations. This raises questions about power relations between heterogeneous individuals and increasingly dominant and homogenizing system objectives. This article crosses epistemic boundaries by integrating computer engineering and a historicalphilosophical approach making the general organization of individuals within large-scale systems and corresponding individual homogenization intelligible. From a versatile archeological-genealogical perspective, an analysis of computer and social architectures is conducted that reinterprets Foucault’s disciplines and political anatomy to (...) establish the notion of politics for a purely technical system. This permits an understanding of system organization as modern technology with application to technical and social systems alike. Connecting to Heidegger’s notions of the enframing (Gestell) and a more primal truth (anfänglicheren Wahrheit), the recognition of politics in differently developing systems then challenges the immutability of contemporary organization. Following this critique of modernity and within the conceptualization of system organization, Derrida’s democracy to come (à venir) is then reformulated more abstractly as organizations to come. Through the integration of the discussed concepts, the framework of Large-Scale Systems Composed of Homogeneous Individuals (LSSCHI) is proposed, problematizing the relationships between individuals, structure, activity, and power within large-scale systems. The LSSCHI framework highlights the conflict of homogenizing system-level objectives and individual heterogeneity, and outlines power relations and mechanisms of control shared across different social and technical systems. (shrink)

Suppose that you intend to go to the theater. Are you therein intending the unconditional proposition that you go to the theater? That would seem to be deeply irrational; after all, you surely do not intend to go if, for instance, in the next instant an earthquake is going to devastate the city. What we intend we do not intend ‘no matter what,’ it is often said. But if so—how can anyone ever rationally intend simply to perform an action of (...) a certain kind? In response to the puzzle, a ‘conditionality’ view of intention has emerged: the contents of everyday intentions are claimed to be fraught with hidden conditional clauses. The paper argues that such claims are radically unmotivated: even unconditional intentions have only limited inferential import and hence contrast sharply with a ‘no matter what’ stance. The point is established by examining relevant patterns of reasoning from unconditional to conditional intentions. (shrink)

In “Existence Is Evidence of Immortality”, Michael Huemer argues that our existence at a time gives us evidence that we are infinitely reincarnated. I argue that his argument is flawed, since it fails to account for the total evidence we gain from observing our existence at the current time. In particular, it neglects essentially de se, or self-locational, evidence. I then present a new, limited, argument for immortality. The argument takes its cue from the well-known Sleeping Beauty puzzle. It argues (...) that, if the popular “thirder” solution to the puzzle is true, then in certain cases one should become confident of one’s own immortality upon registering one’s existence. (shrink)

This article explores the motif of psychic nourishment in Plato’s Protagoras. It does so by analyzing what consequences Socrates’ claim that only a physician of souls will be able adequately to assess the quality of such nourishment has for the argument of the dialogue. To this purpose, the first section of the article offers a detailed analysis of Socrates’ initial conversation with Hippocrates, highlighting and interpreting the various uses of medical metaphors. Building on this, this section argues that the warning (...) Socrates utters against sophistry is much more complex than commonly assumed, and further that Socrates demonstrates his own skill as a physician of souls during this conversation. The second part analyzes the first half of Socrates’ discussion with Protagoras, arguing that Socrates here demonstrates another aspect of his expertise as a physician of souls by making Protagoras participate, although against his will, in bringing the unhealthy character of his teachings to light. (shrink)

En tolkning af “Sein und Zeit” (herefter SuZ) kræver en afklaring af værensspørgsmålets rolle i værket, thi holdningen hertil bestemmer vurderingen af de mange enkeltanalyser, der indgår deri. Essayets tese er, at værensspørgsmålet er bærende i hele SuZ – hvilket ikke er så indlysende, som det måske synes. En række tolkninger har søgt at vise, at værensspørgsmålet er et pseudo-spørgsmål, der bør glemmes, men at de enkelte analyser i SuZ i sig selv er interessante . Andre tolkninger går ud fra, (...) at værensspørgsmålet selv aldrig bliver stillet i SuZ, men at der kun foretages en analyse af Dasein . Derfor bliver det et mål at vise, at de to hovedopgaver i SuZ, Daseinsanalysen og destruktionen af ontologiens historie, ikke er to hinanden uafhængige momenter, der hver især skal forberede grunden ud fra hvilken værensspørgsmålet skal stilles, men derimod er selve udfoldelsen af værensspørgsmålet. (shrink)

In this paper, I question a widespread reading of a passage in the last part of the Phaedrus dealing with the science of dialectic. According to this reading, the passage announces a new method peculiar to the later Plato aiming at defining natural kinds. I show that the Phaedrus itself does not support such a reading. As an alternative reading, I suggest that the science of dialectic, as discussed in the passage, must be seen as dealing primarily with philosophical rhetoric (...) and knowledge of human souls. (shrink)

Plato’s Sophist and Statesman stand out from many other Platonic dialogues by at least two features. First, they do not raise a ti esti question about a single virtue or feature of something, but raise the questions what sophist, statesman, and philosopher are, how they differ from each other, and what worth each should be accorded. Second, a visitor from Elea, rather than Socrates, seeks to addressed these questions and does so by employing what is commonly referred to as the (...) method of collection and division. Some scholars have argued that this so-called method is value neutral and therefore unable to address the question how philosophy differs from sophistry and statesmanship according to worth. This article contends that the procedures of collection and division does not preclude the visitor from taking considerations of worth into account, but rather helps establish an objective basis for settling the main questions of the dialogue. (shrink)

The Parmenides poses the question for what entities there are Forms, and the criticism of Forms it contains is commonly supposed to document an ontological reorientation in Plato. According to this reading, Forms no longer express the excellence of a given entity and a Socratic, ethical perspective on life, but come to resemble concepts, or what concepts designate, and are meant to explain nature as a whole. Plato’s conception of dialectic, it is further suggested, consequently changes into a value-neutral method (...) directed at tracing the interrelation of such Forms, an outlook supposedly documented in certain passages on method from the Sophist and the Statesman as well. -/- The article urges that this reading is untenable. For in the Parmenides the question for what entities one should posit Forms is left open, and the passages on method from the Sophist and Statesman neither encourage a non-normative ontology nor a value-neutral method of inquiry. What the three dialogues encourage us to do is rather to set common opinions about the relative worth and value of things aside when conducting ontological inquiries; and this attitude, the article concludes, demonstrates a close kinship, rather than a significant difference, between Plato’s Socrates and his Eleatic philosophers. (shrink)

The present chapter investigates Heidegger's early understanding of Platonic dialectic in its contrast to sophistry as this comes to expression in his lectures on Plato's Sophist.

I denne artikel argumenteres der for, at døden i Phaidon primært skal forstås metaforisk, som sjælens adskillelse fra kroppen i den rene tænkning. Artiklens hovedtese er, at de fire argumenter for sjælens udødelighed, der findes i dialogen, skal læses som en fremadskridende afklaring af, hvilken væremåde sjælen har, når den isolerer sig fra kroppen, snarere end at læses bogstaveligt som beviser for, at sjælen er udødelig. Tillige argumenteres der for, at den såkaldt anden sejlads – Sokrates’ beskrivelse af, hvorledes han (...) for at forstå virkeligheden søgte tilflugt i argumenter og ideer snarere end i sanserne – skal forstås som et forsvar for en bestemt opfattelse af menneskelig frihed. Når Sokrates indfører ideerne som årsager i løbet af Phaidon, skal dette først og fremmest ses som en forklaring på, hvordan den rene tænkning kan erkende virkeligheden og derigennem kontrollere vores umiddelbare tilbøjeligheder. Det er mulighedsbetingelsen for menneskelig frihed som Platons Sokrates forstår den. Frihed skal da primært forstås som mulighed, nemlig mulighed til at handle i overensstemmelse med det, den fornuftsbestemte indsigt tilsiger en, at man skal gøre, uden hensyntagen til umiddelbare, kropsligt bestemte tilbøjeligheder, herunder tilbøjeligheden til selvopretholdelse for enhver pris. Den foreslåede læsning peger dermed på en politisk dimension af Phaidon, der ofte overses som følge af, at argumenterne for sjælens udødelighed tages for bogstaveligt. (shrink)

Phenomenology and ancient Greek philosophy. The title of this book, indicating these topics as its two main subjects, could give the impression that the subjects are held together by a circumstantial “and.” The title would then indicate a connection between phenomenology and a topic, ancient Greek philosophy, the way titles such as Art and Phenomenology, Phenomenology and Psychological Research, Phenomenology and Virtue Ethics do. This impression would be wrong. First, ancient Greek philosophers take pride of place in the dialogues initiated (...) by many phenomenologists with various figures from the history of philosophy. Second, this is not just because phenomenological philosophers have tended to regard ancient Greek philosophy as the revered beginning of Western thought, reflection upon which may help illuminate any topic modern human beings wish to inquire into or give it a kind of historical dignity. It is first and foremost because ancient Greek philosophy, understood as the scientific attempt to understand the world, ourselves, and our place in the world, in the phenomenological tradition is regarded as one important origin of contemporary Western philosophy and science, even if contemporary philosophy and science is also determined by a new ideal of philosophy that emerges in early modernity. Indeed, for most phenomenologists, Greek philosophy can be regarded as the roots supporting this new ideal—even if these roots are sometimes hidden from sight or forgotten. The main rationale for confronting ancient Greek philosophy phenomenologically is accordingly the attempt to bring to light in its full radicality the phenomenon “philosophy.” Unearthing philosophy as it was originally understood by Greek thinkers may, according to many phenomenologists at least, help us understand what philosophy in the full sense of the word was, has been, and may be again, but also what it has become or even degenerated into in modern times, for instance positivism. It is this way of approaching ancient Greek philosophy that we wish to concentrate on in this book, in the hope that the volume will prove instructive both to people who have an interest in ancient Greek philosophy and wish to know more about the phenomenological approach to it and to people who work within phenomenology and wish to know more about the various approaches to ancient Greek philosophy characterizing the phenomenological movement. We have therefore sought to make the introduction and the individual chapters accessible to non-experts, for instance by transliterating all Greek text, and confining quotes in other languages than English to footnotes and glosses. (shrink)

In this paper I investigate the understanding of eros expressed in the speeches of Phaedrus and Agathon in Plato’s Symposium, two speeches often neglected in the literature. I argue that they contain crucial insights about the nature of eros that reappear in Diotima’s speech. Finally, I consider the relation of Socrates and Alcibiades in light of these insights, arguing that the figure of Alcibiades should be seen as a negative illustration of the notion of erotic education described by Diotima.

This study presents a full-length interpretation of two Platonic dialogues, the Theaetetus and the Sophist. The reading pursues a dramatic motif which I believe runs through these dialogues, namely the confrontation of Socratic philosophy, as it is understood by Plato, with the practise of sophistry. I shall argue that a major point for Plato in these two dialogues is to examine and defend his own Socratic or dialectical understanding of philosophy against the sophistic claim that false opinions and statements are (...) impossible, a claim which undermines the point of Socratic conversation. As this claim in PlatoÕs view rests on a certain understanding of Heraclitus and Parmenides, the confrontation with the sophists implies a confrontation with these two Presocratics as well. This defence of dialectical philosophy takes place, dramatically, at the crucial time when Socrates is publically accused of impiety and of corrupting the youth of Athens, the Theaetetus right before he first faces the accusation, the Sophist on the following day. I shall argue that this fact is important in understanding the argument of the two dialogues. (shrink)

This paper argues that the so-called 6th definition of the sophist found in the outer part of Plato's "Sophist" is a methodological passage meant to point out how the sophist is to be pursued properly if he is to be distinguished from the philosopher.

The “battle” between corporealists and idealists described in Plato’s Sophist 245e6–249d5 is of significance for understanding the philosophical function of the dramatic exchange between the Eleatic guest and Theaetetus, the dialogue's main interlocutors. Various features of this exchange indicate that the Eleatic guest introduces and discusses the dispute between corporealists and idealists in order to educate Theaetetus in ontological matters. By reading the discussion between Theaetetus and the Eleatic guest in the light of these features, one comes to see that (...) the primary audience for the proposal advanced by the Eleatic guest in this passage, namely that being is power, is not any of the participants in the “battle,” as has been commonly assumed, but Theaetetus himself—a fact to bear in mind in any viable interpretation of the passage. (shrink)

This article defends three claims. First, that collection and division in the Phaedrus are described as procedures that underlie human speaking and thinking in general, as well as philosophical inquiry, and are not identified with either. Second, that what sets the dialectical use of these procedures apart from their ordinary use are philosophical suppositions independent of the procedures of collection and division themselves; for that reason, collection and division cannot be identified with dialectic as such. Third, that the second part (...) of the Phaedrus is concerned with the broader question how noble or beautiful speaking, in general, may be said to depend on dialectic as much as it is concerned with the question how rhetoric, as a kind of expertise, is related to dialectic. (shrink)

Japanese translation of ""Schopenhauers Gebrauchstheorie der Bedeutung und das Kontextprinzip. Eine Parallele zu Wittgensteins Philosophischen Untersuchungen". In: 97. Schopenhauer-Jahrbuch (2016), S. 29–51" by Tadahiro Oota (太田 匡洋 [訳]).

Inspired by various research results on the history of philosophy that have not yet been compiled, the paper pursues the thesis that the question "Why is there something rather than nothing" was formulated long before Leibniz. In reviewing this thesis, the 'fundamental question' is differentiated into two individual questions: "Why is there something at all" and 'Why isn't rather nothing?". On the basis of this systematic distinction, the paper examines the history of philosophy from early history to scholasticism with regard (...) to the occurrence of the above mentioned individual questions and their connection to the fundamental question. (shrink)

From the beginning of the 16th century to the end of the 18th century, there were not less than ten philosophers who focused extensively on Venn’s ostensible analytical diagrams, as noted by modern historians of logic (Venn, Gardner, Baron, Coumet et al.). But what was the reason for early modern philosophers to use logic or analytical diagrams? Among modern historians of logic one can find two theses which are closely connected to each other: M. Gardner states that since the Middle (...) Ages certain logic diagrams were used just in order to teach “dull-witted students”. Therefore, logic diagrams were just a means to an end. According to P. Bernhard, the appreciation of logic diagrams had not started prior to the 1960s, therefore the fact that logic diagrams become an end the point of research arose very late. The paper will focus on the question whether logic resp. analytical diagrams were just means in the history of (early) modern logic or not. In contrast to Gardner, I will argue that logic diagrams were not only used as a tool for “dull-witted students”, but rather as a tool used by didactic reformers in early modern logic. In predating Bernhard’s thesis, I will argue that in the 1820s logic diagrams had already become a value in themselves in Arthur Schopenhauer’s lectures on logic, especially in proof theory. (shrink)