Ivan Boh affirms and Robert Pasnau denies that William Heytesbury holds merely true belief to be sufficient for knowledge in the broad sense. I argue that Boh is correct and Pasnau is mistaken, and that there is a long-running orthodox medieval tradition agreeing with Heytesbury about the conditions for knowledge. I offer a hypothesis about the origins, continuance and demise of that medieval tradition, and some remarks about the tradition's significance.

The question of whether ethical individuals have a disadvantage in becoming leaders is an important one that has not been adequately discussed in the business ethics/leadership literature. In this paper, drawing on Plato’s middle dialogues and particularly on the Republic, I develop a Platonic framework of the constraints that might hinder the emergence of what the dialogues term ‘philosopher kings’. Subsequently, I use this framework to elucidate the emergence of ethical leaders in todays’ organizations and conclude with a discussion of (...) this paper’s implications for the ethical leadership literature. (shrink)

Abstract: In this paper I claim that Plato’s Cave is fundamentally a political, not an epistemological image, and that only by treating it as such can we appreciate correctly its relation to the images of the Sun and the Line. On the basis of textual evidence, I question the two main assumptions that support (in my view, mistakenly) the effort to find an epistemological parallel between the Cave and the Line: first, that the prisoners represent humankind in general, and, second, (...) that the cave itself represents the visible world of ordinary experience while the world outside the cave represents the realm of the Forms. Disrupting these assumptions opens up a reading that highlights the cultural and political themes at play in this famous allegory and allows us to make better sense of it. -/- Keywords: Plato, Cave, Politics, Culture -/- Resumen: En este ensayo sostengo que la Caverna de Platón es fundamentalmente una alegoría política, no epistemológica, y que solo tratándola como tal, podremos apreciar correctamente la relación que guarda con las imágenes del Sol y de la Línea. Sobre la base de evidencia textual, pongo en duda las dos hipótesis principales sobres las que se funda (a mi parecer, equivocadamente) el esfuerzo por encontrar un paralelo epistemológico entre la Caverna y la Línea: la primera, que los prisioneros representan a la humanidad en general, y la segunda, que la propia caverna representa el mundo visible de la experiencia corriente, mientras que el mundo fuera de la caverna representa el reino de las Ideas. La suspensión de estos supuestos posibilita una lectura que pone de relieve los temas culturales y políticos que están en juego en esta famosa alegoría y nos permite así entenderla mejor. -/- Palabras Clave: Platón, Caverna, Política, Cultura . (shrink)

Two readings of the much-discussed περιτροπή argument of "Theaetetus" 170c-171c have dominated the literature. One I call "the relativity reading". On this reading, the argument fails by ignoratio elenchi because it "carelessly" omits "the qualifications 'true for so-and-so' which [Protagoras'] theory insists on" (Bostock 1988: 90). The other reading I call "the many-worlds interpretation". On this view, Plato's argument succeeds in showing that "Protagoras' position becomes utterly self-contradictory" because "he claims that everyone lives in his own relativistic world, yet at (...) the same time he is forced by that very claim to admit that no one does" (Burnyeat 1976b: 48). I discuss and criticise both readings, and present a third, according to which the point of the argument is, very roughly, that Protagoras is committed to equating truth and truth-for, and so, further, to their intersubstitutability. This further commitment proves fatal to his argument. (shrink)

What does Plato mean in saying that, for all forms, “F-ness is F”? In such claims, I argue, ‘F’ is being used metonymically to refer to the property of being productive of F-ness rather than to the property of being F, in a way consistent with univocity and the rejection of a genuine Self-Predication Assumption. I explain and defend this productive metonymy reading and show how it can resolve the troubling argument at Phaedo 74b7-c6.

In this paper, we outline a framework for understanding the different kinds of knowledge required for medical practice and use this framework to show how scientism undermines aspects of this knowledge. The framework is based on Michael Polanyi’s claim that knowledge is primarily the product of the contemplations and convictions of persons and yet at the same time carries a sense of universality because it grasps at reality. Building on Polanyi’s ideas, we propose that knowledge can be described along two (...) intersecting “dimensions”: the tacit–explicit and the particular–general. These dimensions supersede the familiar “objective−subjective” dichotomy, as they more accurately describe the relationship between medical science and medical practice. Scientism, we argue, excludes tacit and particular knowledge and thereby distorts “clinical reality” and impairs medical practice and medical ethics. (shrink)

In the Theaetetus Socrates provides an elaboration and discussion of Protagoras’ measure doctrine, grounding it in a “secret doctrine” of flux. This paper argues that the anthropology of the myth in the Protagoras provides an earlier, very different way to explain the measure doctrine, focusing on its application to civic values, such as “just,” “fine,” and “pious.” The paper shows that Protagoras’ explanation of the dual etiology of virtue – that it is acquired both by nature and by nurture – (...) tracks the two meanings of “anthropos” in his formulation of the measure doctrine, as “humankind” and “individual human.” On Protagoras’ account, humankind’s survival can be explained by the fact that humans share shame and justice, which enables them to live together in cities. (shrink)

In modern epistemology, one ‘value of knowledge’ problem concerns the question why knowledge should be valued more highly than mere true belief. Though this problem has a background in Plato, the present paper, focused on Philebus 55–9, is concerned with a different question: what questions might one ask about the value of knowledge, and what question does Plato ask here? The paper aims to articulate the kind of value Plato here attributes to ‘useless’ knowledge, knowledge pursued without practical object; and (...) why, according to him, there is value in being a knower. Though his answer to this question requires commitments we may resist, it has a structure of general philosophical interest. (shrink)

ABSTRACTAt least in some dialogues, Plato has been thought to hold the so-called Two Worlds Theory, according to which there can be belief but not knowledge about sensibles, and knowledge but not belief about forms. The Phaedo is one such dialogue. In this paper, I explore some key passages that might be thought to support TW, and ask whether they in fact do so. I also consider the related issue of whether the Phaedo argues that, if knowledge is possible at (...) all, we can have it only when discarnate. (shrink)

One of Plato’s central tenets is that we can know forms. In Parmenides 133b4–134b5, Plato presents an argument whose sceptical conclusion is that we can’t know forms. Although he indicates that the argument doesn’t succeed, he also says it’s difficult to explain how it fails. Commentators have suggested a variety of flaws. I argue that the argument can be defended against some, though not all, of the alleged flaws. But I also argue that Plato hints at a crucial distinction that (...) hasn’t been brought to bear in this context, and that indeed he is sometimes thought not to draw: that between the content and object of knowledge. Once we are clear about this distinction, we can see that the sceptical argument doesn’t imply that we can’t know forms. (shrink)

Two readings of the much-discussed περιτροπή argument of "Theaetetus" 170c-171c have dominated the literature. One I call "the relativity reading". On this reading, the argument fails by ignoratio elenchi because it "carelessly" omits "the qualifications 'true for so-and-so' which [Protagoras'] theory insists on" (Bostock 1988: 90). The other reading I call "the many-worlds interpretation". On this view, Plato's argument succeeds in showing that "Protagoras' position becomes utterly self-contradictory" because "he claims that everyone lives in his own relativistic world, yet at (...) the same time he is forced by that very claim to admit that no one does" (Burnyeat 1976b: 48). I discuss and criticise both readings, and present a third, according to which the point of the argument is, very roughly, that Protagoras is committed to equating truth and truth-for, and so, further, to their intersubstitutability. This further commitment proves fatal to his argument. (shrink)

In contemporary metaphysics, the Eleatic Principle (EP) is a causal criterion for reality. Articulating the EP with precision is notoriously difficult. The criterion purportedly originates in Plato’s Sophist, when the Eleatic Visitor articulates the EP at 247d-e in the famous Battle of the Gods and the Giants. There, the Visitor proposes modifying the ontologies of both the Giants (who are materialists) and the Gods (who are friends of the many forms), using a version of the EP according to which only (...) items which have the capacity to affect or to be affected are real. Recently, it has been argued that while there are some genetic connections between the EP and the views of some of the historical Eleatics (Parmenides and Zeno), the views of Melissus are generally incompatible with the EP. This raises the following question: What, exactly, is Eleatic about the Eleatic Principle? In this paper, I look to the dialectical context in which the Visitor’s appeal to the EP appears, and I propose that there are at once three relevant senses of affecting and being affected in the text: (1) tangible contact (as in the interactions between the bodies of the materialists), (2) Cambridge change (as in the form's being affected by a soul via the act of coming to know), and (3) the notion of a cause that does not itself change (as in a form’s affecting another form, a soul, or any sensible item). I argue that these have clear parallels to the metaphysics of all three main Eleatic philosophers, and that the views of Parmenides, Zeno, and Melissus are therefore compatible with the EP. This has interesting consequences for narratives about the reception of the Eleatics in Plato, the inclusion of an Eleatic Visitor as an interlocutor in the Sophist, and for the metaphysics of subsequent schools (such as the Stoics) who are widely thought to have been influenced by the EP. (shrink)

Recent critiques of veritistic value monism, or the idea that true belief is unique in being of fundamental epistemic value, typically invoke a claim about the surplus value of knowledge over mere true belief, in turn traced back to Plato's Meno. However, to the extent Plato at all defends a surplus claim in the Meno, it differs from that figuring in contemporary discussions with respect to both its scope and the kind of value at issue, and is under closer scrutiny (...) fully compatible with veritistic value monism. Consequently, contrary to what seems to be supposed in the literature, the critics of monism have little to gain from turning to the Meno for support. (shrink)

ABSTRACT The extant attempts in the literature to refute the greatest difficulty argument in the Parmenides have focused on denying the parallelism between the pros relations among Forms and those among particulars. However, these attempts are unsatisfactory, for the argument can reach its conclusion that we cannot know any Forms without relying on this parallelism. I argue that a more effective strategy is to deny the more essential premise that the knowledge-object relation is a pros relation. This premise is false (...) because pros relations require definitional and ontological codependence between the relata, and the knowledge-object relation does not satisfy this reciprocity condition. RÉSUMÉ Les tentatives existantes dans la littérature de réfuter l'argument de la plus grande difficulté dans le Parménide ont surtout entrepris de nier le parallélisme entre les relations de type pros entre les Formes et celles entre les particuliers. Par contre, ces tentatives sont insatisfaisantes, parce que l'argument peut mener à sa conclusion selon laquelle on ne peut connaître les Formes sans s'appuyer sur ce parallélisme. Je soutiens qu'une stratégie plus efficace consiste à nier la prémisse plus essentielle selon laquelle la relation objet-connaissance est une relation de type pros. Cette prémisse est fausse parce que les relations de type pros requièrent une codépendance définitionnelle et ontologique entre les relata, et la relation objet-connaissance ne satisfait pas à cette condition de réciprocité. (shrink)

This is a study of the correspondence between Forms and particulars in Plato. The aim is to determine whether they exhibit an ontological symmetry, in other words, whether there is always one where there is the other. This points to two questions, one on the existence of things that do not have corresponding Forms, the other on the existence of Forms that do not have corresponding things. Both questions have come up before. But the answers have not been sufficiently sensitive (...) to the intricacies of the questions. Nor have they been adequately resourceful with what little evidence there is in the original sources. The intention here is to make up for that deficiency, not just with better answers but also with better insight into the questions. (shrink)