This dissertation identifies and explains four major contributions of the Laws and related late dialogues to Plato's moral and political philosophy. -/- Chapter 1: I argue that Plato thinks the purpose of laws and other social institutions is the happiness of the city. A happy city is one in which the city's parts, i.e. the citizens, are unified under the rule of intelligence. Unlike the citizens of the Republic, the citizens of the Laws can all share the same true judgments (...) of value, and this unanimity explains the city's unity. Plato thinks that aiming at the city's happiness is justified, moreover, because a unified city contributes to the universe's order. -/- Chapter 2: In the Laws, Plato holds that the sick, poor, ugly, weak, but virtuous are happy, and that health, wealth, beauty, and strength benefit the virtuous but harm the vicious. Only in the Laws does Plato commit himself to all these claims simultaneously, and I explain how the moral psychology of the Laws permits Plato to maintain them coherently. -/- Chapter 3: I argue that, in the Laws, becoming virtuous is the same as becoming like God. Becoming like God does not require escape from the world of change as it does in the Theaetetus, however. Rather, becoming like God requires bringing "measure" or appropriate order to the world of change, especially to those entities over which we have the most control—our own souls. In the Laws, citizens achieve this order as they learn to be just and to understand the nature of reality. -/- Chapter 4: Unlike the Republic and Statesman, the Laws holds that obedience of the citizens to their laws should be effected, if possible, with rational persuasion. I argue that Plato wishes such persuasion to educate the citizens of the reasons for the laws. Understanding the laws' justification is the principal way in which citizens acquire the good judgment necessary for virtue. The city becomes more happy as the citizens progress in virtue, so rational persuasion is a necessary means to the lawgiver's overall aim. (shrink)

The field of experimental philosophy has received considerable attention, essentially for producing results that seem highly counter-intuitive and at the same time question some of the fundamental methods used in philosophy. A substantial part of this attention has focused on the role of intuitions in philosophical methodology. One of the major contributions of experimental philosophy on this topic has been concrete evidence in support of intuitional diversity; the idea that intuitions vary systematically depending on variables such as ethnicity, socioeconomic background, (...) or gender. Because of the important implications, these findings have been the subject of extensive debate. Despite the seeming significance of the findings and despite all the debates that the experimental philosophy movement has prompted, what has not been examined systematically is the reproducibility of the results. Instead, the reported findings have been simply accepted as established facts. We set out to replicate a wide range of experiments and surprisingly failed to reproduce many of the reported findings, some of which are from the most cited and attention grabbing papers of the field. We draw two conclusions from our findings. The first is that the instability of intuitions has been exaggerated by experimental philosophers. Intuitions appear to be more uniform across different demographic groups. The argument that intuitions need to be discarded because they depend on arbitrary factors such as ethnicity, socioeconomic background, or gender does not seem tenable anymore. The second conclusion is that experimental philosophy needs a better system to ensure the reproducibility of published findings. The current research-publication system of various empirical fields, especially those employing statistical methods, leads to an overproduction of false-positive findings in the published literature. Unless changes are made to the current research-publication system, this overproduction is likely to continue, in experimental philosophy as well as other disciplines. (shrink)

There will be a few themes. One to get us going: expansion versus contraction. About an object, o, and the region, R, of space(time) in which o is exactly located,1 we may ask: i) must there exist expansions of o: objects in filled superregions2 of R? ii) must there exist contractions of o: objects in filled subregions of..

Aphantasia, i.e., the inability to voluntarily form visual mental images, affects approximately 2 to 5 percent of the population and plays an important role in a more general debate revolving around the role of imagery for our cognition. This thesis investigates aphantasia by means of an interdisciplinary approach, combining insights from contemporary neuroscientific research with historical philosophical arguments, with a specific focus on the later philosophy of Ludwig Wittgenstein. A new theoretical concept, meta-imagination, is developed and it is argued that (...) the concept can explain why aphantasics perform successfully on a wide range of visual imagery tasks, thus providing important implications for the more general debate about the connection between imagery and cognition. (shrink)

This article investigates how Plato thinks we secure necessary motivational conditions for inquiry. After presenting a typology of zetetic breakdowns in the dialogues, I identify norms of inquiry Plato believes all successful inquirers must satisfy. Satisfying these norms requires trust that philosophy will not harm but benefit inquirers overall. This trust cannot be secured by protreptic argument. Instead, it requires divine intervention—an extra-rational foundation for rational inquiry.

This paper investigates the nature of emotional experience in relation to the senses, and it defends the thesis that emotional experience is partly non-sensory. In §1 I introduce my reader to the debate. I reconstruct a position I call ‘restrictivism’ and motivate it as part of a reductive approach to mind’s place in nature. Drawing on intuitive but insightful remarks on the nature of sensation from Plato, I map out the conditions under which the restrictivist thesis is both substantive and (...) plausible. I then present two arguments against it. The first argument, which I lay out in §2, draws on recent empirical results in emotion research to show that restrictivism cannot be reconciled with the possibility of knowledge of one’s own emotional state by acquaintance. The second argument, which I present in §3, individuates a claim on which most contemporary theories of emotional valence converge and uses it to demonstrate that restrictivism has a false implication: it must deny that valence is experientially felt. (shrink)

This paper concerns Plato’s characterization of the body as the soul’s tool. I take perception as an example of the body’s usefulness. I explore the Timaeus’ view that perception provides us with models of orderliness. Then, I argue that perception of confusing sensible objects is necessary for our cognitive development too. Lastly, I consider the instrumentality relationship more generally and its place in Plato’s teleological worldview.

One Stoic response to the skeptical indistinguishability argument is that it fails to account for expertise: the Stoics allow that while two similar objects create indistinguishable appearances in the amateur, this is not true of the expert, whose appearances succeed in discriminating the pair. This paper re-examines the motivations for this Stoic response, and argues that it reveals the Stoic claim that, in generating a kataleptic appearance, the perceiver’s mind is active, insofar as it applies concepts matching the perceptual stimulus. (...) I argue that this claim is reflected in the Stoic definition of the kataleptic appearance, and that it respects their more general account of mental representation. I further suggest that, in attributing some activity to the mind in creating each kataleptic appearance, and in claiming that the expert’s mind allows her to form more kataleptic appearances than the amateur, the Stoics draw inspiration from the wax tablet model in Plato’s Theaetetus (190e–196d), where Socrates distinguishes the wise from the ignorant on the basis of how well they match sensory input with its appropriate mental ‘seal’ (σφραγίς). (shrink)

To be acquainted with something (in the philosophical sense of “acquainted” discussed here) is to be directly aware of it. The idea that we are acquainted with certain things we experience has been discussed throughout the history of Western Philosophy, but in the early 20th century it gained especially focused attention among analytic philosophers who drew their inspiration from Bertrand Russell's work on acquaintance. Since then, many philosophers—particularly those working on self‐knowledge or perception—have used the notion of acquaintance to explain (...) various facts about human experience and knowledge. In this paper, I offer an overview of this work, with particular focus on the resurgent literature on acquaintance in contemporary analytic philosophy. After more fully explaining what acquaintance is (or is supposed to be), I describe some reasons for thinking that we are indeed acquainted with certain things we experience, and then I survey some of the facts about experience and knowledge that acquaintance may help explain. (shrink)

The article deals with the formation of understanding and interpretation of the phenomenon of memory in the European philosophical tradition. The historical-cultural and linguistic-semantic connections of the ideological paradigm of Ancient Greek thinkers and philosophers are researched. In article revealded a peculiarities of the main philosophical categories of Plato’s philosophy in the context of explaining the phenomenon of memory and memories. We realized a distinction for better understanding of the phenomenon of memory for ancient culture into two branches: 1) memory (...) as a natural property of man and 2) memory as a technique, as a skill for perfection, as an instrument. We emphasize that ancient categories: eidos, logos and cosmos are the central of the theory of memory of the western tradition, which we can also observe in the treatises left by Plato. Also we analyzed the connection between the Platonian theory of memory and the development of knowledge about memory paradigm. Memory for Plato is determined by a metaphysical character, like immortal knowledge, it is a way of human transcendence. An intelligent soul for Plato is the translator of eternal knowledge of things through which we learn not only the world, but also receive knowledge about ourselves, our true perceptual perception, and represent our ideas in real forms. The soul of man for Plato, due to memory, connects human existence from outside the physical space and time, where there is simultaneously the past, present and future, which at the metaphysical level are united into a concrete conceptual design of memory. Thus, the Platonic theory of memory as a reproduction of knowledge can not relate to the development of the art of memory, but has a direct connection with the development of the paradigm of knowledge about memory and allows us to understand the concept of memory as a philosophical and cultural phenomenon. We noted that the theory of Plato’s memory resembles the same categories as the art of memory, it is a category of “place” bearing memory-reflection in the memory of the soul and “image” of true knowledge. (shrink)

While most interpreters take the opening of De Anima III 2 to be an oblique reference to some sort of conscious awareness, I argue that Aristotle intends to explain what I call ‘joint perception’: when conjoined with Aristotle’s subsequent claim that perceiving and being perceived are the same activity, the metaperception underpins the perception of a unified object. My interpretation is shown to have a more satisfactory account of the aporiai that follow. While I argue that the immediate focus of (...) the metaperceptual account is joint perception, it may also be applicable to other kinds of complex perception, which I briefly consider in the closing section. (shrink)

In the 1990s and early 2000s, researchers in the field of so-called neuoaesthetics recruited research subjects who had been untrained in arts and did not have any pronounced interest in aesthetic matters for their laboratory experiments. The prevalent choice of research subjects has recently changed. Currently, a great number of studies uses subjects who are professionally engaged in the art world. In my paper, I describe, analyze, and critically discuss the two research paradigms regarding the subjects involved in the experiments (...) in neuroaesthetics. I claim that although the more recent one can be generally regarded as an improvement of the research framework, it underestimates the difficulties brought by the notion of expertise in aesthetic perception. (shrink)

In this article I offer an account of normative thought inspired by Plato's proposal in the Theaetetus that judgement is ‘speech spoken … silently.’ After arguing that force conventionalism is the speech act theory best suited for modeling dialogic inner speech, I close the article by sketching the picture of normative thought that results. Though I defend a particular theory of normative speech elsewhere, the core insights of this article can be used by other theorists as well. The arguments offered (...) here also serve as an important step forward for the more general program of using social speech to better understand thought. (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)

At Sophist 253d-e the Eleatic Visitor offers a notoriously obscure description of the fields of one-and-many that the dialectician “adequately discerns.” Against the readings of Stenzel, Cornford, Sayre, and Gomez-Lobo, I propose an interpretation of that passage that takes into account the trilogy of Theaetetus-Sophist-Statesman as its context. The key steps are to respond to the irony of Socrates’ refutations at the end of the Theaetetus by reinterpreting the last two senses of logos as directed to forms and to recognize (...) their correlation with the two different modes of diairesis practiced by the Eleatic Visitor. These steps position us to recognize in the Visitor’s remarks at Sophist 253d-e a schematic description of the two kinds of eidetic field that the two modes of diairesis trace. (shrink)

This paper focuses on Plotinus’ account of the soul’s cognitive powers of sense perception and discursive thought, with particular reference to the treatises 3. 6 [26], 4. 4 [28] and 5. 3 [49] of the Enneads . Part 1 of the paper discusses Plotinus’ direct realism in perception. Parts 2 and 3 focus on Plotinus’ account of knowledge in Enneads 5. 3 [49] 2–3. Plotinus there argues that we make judgements regarding how the external world is by means of discursive (...) reasoning. This latter claim, however, is in tension with what Plotinus argues elsewhere regarding our perceptual apprehension of the external world (3. 6 [26] 1; 4. 4 [28] 23). This puzzle is addressed in Part 3 of the paper, which investigates Plotinus’ view that there exist some sense perceptions of which we are unaware. Finally, Part 4 looks at Plotinus’ understanding of Plato’s famous wax block analogy, in 5. 3 (49). The overall conclusion of the paper is that Plotinus’ account of knowledge is radically different from that of the Cartesian tradition. (shrink)

This essay aims to sharpen debates on the pros and cons of historical epistemology, which is now understood as a novel approach to the study of knowledge, by comparing it with the history of epistemology as traditionally pursued by philosophers. The many versions of both approaches are not always easily discernable. Yet, a reasoned comparison of certain versions can and should be made. In the first section of this article, I argue that the most interesting difference involves neither the subject (...) matter nor goal, but the methods used by the two approaches. In the second section, I ask which of the two approaches or methods is more promising given that both historical epistemologists and historians of epistemology claim to contribute to epistemology simpliciter . Using traditional problems concerning the epistemic role of perception, I argue that the historical epistemologies of Wartofsky and Daston and Galison fail to show that studying practices of perception is philosophically significant. Standard methods from the history of epistemology are more promising, as I show by means of reconstructing arguments in a debate about the relation between perception and judgment in psychological research on the famous moon illusion. (shrink)

Protagoras believes that all beliefs are true. Since Protagoras' belief that all beliefs are true is itself a belief, it follows from Protagoras' belief that all beliefs are true that Protagoras' belief is true. But what about the belief that Protagoras' belief is false? Doesn't it follow, by parallel reasoning and not at all trivially, that if all beliefs are true and there is a belief that Protagoras' belief is false, then Protagoras' belief is false?

John MacFarlane explores how we might make sense of the idea that truth is relative. He provides new, satisfying accounts of parts of our thought and talk that have resisted traditional methods of analysis, including what we mean when we talk about what is tasty, what we know, what will happen, what might be the case, and what we ought to do.

This paper considers the use that Plato makes of the Principle of Non-Contradiction in his engagements with eristic refutations. By examining Plato’s use of the principle in his most detailed engagements with eristic—in the Sophist, the discussion of “agonistic” argumentation in the Theaetetus, and especially the Euthydemus—I aim to show that the pressure exerted on Plato by eristic refutations played a crucial role in his development of the PNC, and that the principle provided him with a much more sophisticated means (...) of demarcating philosophical argumentation from eristic than he is generally thought to have. In particular, I argue that Plato’s qualified formulation of the PNC restricts the class of genuine contradictions in such a way that reveals the contradictions that eristics produce through their refutations to be merely apparent and that Plato consistently appeals to his qualified conception of genuine contradiction in his encounters with eristics in order to demonstrate that their refutations are merely apparent. The paper concludes by suggesting that the conception of genuine contradiction afforded by the PNC did not just provide Plato with a way of demarcating genuine from eristic refutations, but also with an answer to substantive philosophical challenges that eristics raised through their refutations. (shrink)

Scholars often assert that Plato and Aristotle share the view that discursive thought is internal speech. However, there has been little work to clarify or substantiate this reading. In this paper I show Plato and Aristotle share some core commitments about the relationship of thought and speech, but cash out TIS in different ways. Plato and Aristotle both hold that discursive thinking is a process that moves from a set of doxastic states to a final doxastic state. The resulting judgments (...) can be true or false. Norms govern these final judgments and, in virtue of that, they govern the process that arrives at those judgments. The principal norm is consistency. However, the philosophers differ on the source of this norm. For Plato, persuasiveness and accuracy ground non-contradiction because internal speech is dialogical. For Aristotle, the Principle of Non-Contradiction grounds a Doxastic Thesis that no judgment can contradict itself. For Aristotle, metaphysics grounds non-contradiction because internal speech is monological. (shrink)

Plato gives us two model philosophical figures, apparently in contrast with each other—one is the otherworldly philosopher who sees truth and reality outside the cave and has the knowledge to rule authoritatively within it; the other is the demotic figure of Socrates, who insists that he does not know but only asks questions. I consider Plato’s contrasting idioms of seeing and asking or talking, and argue that the rich account of perception that is represented in the Republic requires both idioms, (...) and both models, to explain the development of epistemic virtue. Furthermore, the conditions he places on the giving and taking of reasons show how Plato takes intellectual virtue to be inseparable from moral virtue. That integrated picture of virtue may—however disposed we may be towards the role of virtue in either ethics or epistemology—have something to say to us about how philosophy might best be carried on. (shrink)

Há muita discussão sobre como interpretar o papel do argumento ‘Saber ou não Saber’ em Teeteto 188a-c. Alguns intérpretes supõem que esse papel é dialético e Platão não está comprometido com sua verdade. Outros pensam que o argumento revela a confusão de Platão sobre o tema da opinião falsa à época do Teeteto. Em minha análise, há uma terceira via que faz mais justiça ao que Platão está desenvolvendo em 188a-c. Penso que em 188a-c temos uma versão do princípio platônico (...) da infalibilidade. (shrink)

Within a supportive learning environment, dialogue can allow for the identification and testing of assumptions and tacit beliefs. It can also illustrate the inadequacies in superficial thinking about ethical problems. Internal dialogue allows us to examine our beliefs, and to prepare and evaluate arguments. Each of these elements is important in the study of business ethics. This paper outlines one teaching technique based on Socratic dialogue, and shows how it can be applied to develop business students' thinking about ethics. After (...) justifying the suitability of this technique, and detailing its key elements, the paper offers for consideration an illustration of how the technique may be applied in a classroom setting, using structured role play. The paper concludes with a “teaching agenda”, offering suggestions for how this technique can be applied to teaching business ethics in an undergraduate, or postgraduate module, where it can examine language, structures and practices. (shrink)

I set the stage for Socrates and Aristophanes’ alliance by beginning with Hegel’s question, what is the object of art?, in the context of his analysis of ancient Greek “art-religion.” Hegel traces the shifting object of art through a variety of artistic practices before arriving at comedy, which he identifies as the last stage of Greek aesthetic life. He finally asks, what is the object of comedy? Unlike other artistic practices that are positively defined by their created object or creative (...) activity, ancient comedy appears to be purely destructive, terminating anything that might be traditionally recognizable as an object of art. Hegel points to Aristophanes and Socrates as representing two sides of the defacement of the object of art-religion as such. Moving beyond Hegel, I turn to Aristophanes and Plato to consider how in the performative destruction of the object of aesthetic and philo- sophical reflection, something slips into being that may be identified as the phantom form of the Subject. (shrink)

In this paper I explore a famous part of Plato’s Theaetetus where Socrates develops various models of the mind (picturing it first as a wax tablet and then as an aviary full of specimen birds). These are to solve some puzzles about how it is possible to make a mistake. On my interpretation, defended here, the discussion of mistakes is no digression, but is part of the refutation of Theaetetus’s thesis that knowledge is “true doxa”. It reveals that false doxa (...) is possible only if there is a certain stock of abstract knowledge, conceptual knowledge, that is not awareness of the particular individual that is being described. The individual must be identified under some description, or seen as something of a certain kind. Error can only occur if the description applied misdescribes the situation, but then if it is to be applied falsely it must first have been known from somewhere else. So knowledge cannot be reduced to the application of descriptions to particulars, but is to be found in the prior possession of abstract descriptions that can be deployed in identifying particular individuals on the ground. (shrink)

This article will contrast two portrayals of Protagoras: one in the "Theaetetus," where Socrates discusses Protagorean theory and even comes to his defense by imitating the deceased sophist; and another in the "Protagoras," where Socrates recounts his encounter with the sophist. I suggest that Plato wants listeners and readers of the dialogues to hear the dissonance between the two portraits and to wonder why Socrates so distorts Protagoras in the "Theaetetus." Protagoras in the "Protagoras" behaves and speaks in ways that (...) are incompatible with the Protagorean position presented in the "Theaetetus.". (shrink)

This paper demonstrates that two signature methodological concepts in Husserl’s transcendental phenomenology, the epoché and the phenomenological reduction, derive from his reflections on the history and significance of epistemological skepticism in the Western tradition. Drawing on his Lectures on Logic and Epistemology (Hua XXIV) from the Winter semester of 1906–07, it is argued that Husserl derives his conception of the fundamental task of transcendental philosophy from his reading of a novel skeptical challenge posed by David Hume’s philosophy—a kind of skeptical (...) challenge that Husserl did not recognize in his earlier treatments of Hume. On Husserl’s revised reading, Hume promotes a certain kind of philosophical “despair” (Verzweiflung) or, as it may be called today, “quietism” as the only possible response to the traditional problems of epistemology stemming back to the ancient skeptics. Husserl’s criticism of Hume’s quietism is presented. And Husserl’s reading of Descartes’s cogito as the first decisive uncovering of the limits of epistemological skepticism in the Western tradition is shown to be the source of two key elements of Husserl’s positive alternative to Humean epistemological quietism, which ultimately become the heart of a novel conception of critical transcendental philosophy. These two key elements are the phenomenological epoché and phenomenological reduction. Husserl’s arguments are presented for the claim that these are essential parts of any epistemological program that can answer traditional skeptical challenges. (shrink)

A puzzle about false judgement is raised in the Theaetetus (187d-200c), but not successfully answered there. On the proposed account, the confusion that explicitly vitiates Theaetetus’ final attempt to define knowledge is already at work implicitly in this puzzle. Theaetetus shares popular assumptions about knowledge (epistēmē), but also accepts that there are cognitive constraints on judgement (doxa): the puzzle arises because he fails to distinguish the one cognitive condition from the other.

Our modern scientific explanation of colour as a subjective impression has replaced a ‘pre-theoretical’ notion of colour as an intrinsic property of objects, which was mainstream in ancient thought. Why have we lost such pre-theoretical notion, and what have we lost by losing it? I argue that most ancient Greek philosophers exploited this pre-theoretical assumption – one that was obvious to them – in terms and ways that are still worthy of attention in the context of contemporary philosophy of colour. (...) I offer an in-depth analysis of the theories of a number of early Greek philosophers, as well as of Plato in the Timaeus, showing that they tend to share the idea that colour is an essential property of external bodies and therefore plays a causal role in perception. Then I focus on a comparison between Democritus’ stance and Aristotle’s in order to highlight a significant contrast between the two. Democritus' theory is an exception in ancient thought because it traces the colour phenomenon back to a refraction of atmospheric light through atomic aggregates. Aristotle, instead, posits the presence of colour and light in the bodies themselves. Finally, I interpret Aristotle's account as the most complex attempt in ancient thought to weld together what we call the ‘manifest image’ of colour and its ‘scientific image’. (shrink)

The paper attempts to examine what is by all accounts a self-styled approach to contemporary existence, borrowing from Claire Colebrook’s 2017 essay on Bernard Stiegler’s so-called ‘curious problem of range’. Subsequently, we tackle Yuk Hui's interpretive reading of Stiegler's analysis of retentional digitality. Hui promotes the idea of archival metaphysics to overlay Stiegler’s concept of tertiary retention with tertiary protention. However, Stiegler's reformulation of Kant's aesthetics already addresses these concerns: the problem of range that his works continually provoke and the (...) self-inscriptive conditions of writing that limit the examination of this range to the paradox of différance. Stiegler assigns the task of unraveling this range in question to the amateur, vis-a-vis the critic's typical role in the conduct of critical reason. For Stiegler, the amateur is the full achievement of aesthetic judgment, essential to education and culture formation. (shrink)

En su defensa del Principio de no-contradicción, Aristóteles discute con varios interlocutores, desde los presocráticos hasta el sofista Protágoras, este último ampliamente conocido en la Antigüedad por trastocar el concepto de verdad con su doctrina del “homo mensura”, declarando así la imposibilidad del discurso falso. Consideramos que una lectura atenta del Libro Γ que rescate la figura del abderita puede mostrar cómo la crítica del sofista es clave para la constitución del pensamiento aristotélico en torno al problema de la verdad. (...) En la primera sección expondré algunas consideraciones sobre el PNC que son relevantes para entender las motivaciones detrás de las críticas aristotélicas al sofista. A continuación, analizaré dos de los argumentos aristotélicos contra los adversarios que discuten de mala fe: por una parte, la “refutación” de Metaph. Γ. 4 y, por otra parte, el “argumento de las apariencias contrarias” de Metaph. Γ. 5. Mi hipótesis es que algunos elementos teóricos esbozados en Γ. 4 permiten reconstruir una crítica aristotélica seria contra Protágoras en Γ. 5. Finalmente expondré una síntesis del camino recorrido y ofreceré algunas conclusiones. (shrink)

Embora a noção de crença e sua relação com a ação sejam bastante discutidas na literatura sobre o ceticismo, a descrença e as mudanças de crenças são pouco examinadas, apesar de bastante relevantes para a análise das crenças. Em que condições mudamos de crenças, abandonamos crenças anteriores e adotamos novas crenças? Examinaremos dois exemplos significativos e muito influentes na tradição que podem nos esclarecer quanto a isso: Agostinho e Martinho Lutero.

In this second installment on the Theaetetus, I discuss Theaetetus' second and third definitions of knowledge, namely, ‘true judgment’ and then ‘true judgment with the addition of an account’. I offer a brief description of Socrates' intricate examination of these suggestions, concentrating especially on the discussion of false judgment and that of the so-called ‘Dream Theory’. I then proceed to map different lines of interpretation for these passages that have been offered by scholars writing in the last 40 years.

With the use of a particular metaphor, which appears at the end of the Cratylus and is taken up with perfect symmetry at the beginning of the Theaetetus, Plato certainly wanted to indicate the succession of Cratylus–Theaetetus as an order for reading the two dialogues, which Trasillus faithfully reproduced in structuring the second tetralogy of Platonic dialogues. The claim of the theory of ideas, with which the Cratylus ends, must therefore be considered the background in which to place not only (...) the analysis of the name carried out in the Cratylus, but also the discussion and criticism of the epistemological theories examined and refuted in the Theaetetus. The transition from the discussion of the name to that of the logos is another important theoretical element that connects the two dialogues. Another one is the theory of knowledge, already precisely elaborated in the Cratylus, and taken up and deepened in the Theaetetus. Finally, the theme of false and error is a third theoretical element common to the two dialogues, which, starting from Euthydemus, finds its solution in the Sophist. (shrink)

In this paper I argue that in the digression in Plato’s Theaetetus godlikeness may be construed as Socrates’ ethical achievement, part and parcel of his art of mental mid­wifery. Although the philosophical life of contemplation and detachment from earthly affairs exemplifies the human ideal of godlikeness, Socrates’ godlikeness is an inferior but legitimate species of the genus. This is the case because Socratic godlikeness abides by the two requirements for godlikeness that Socrates sets forth in the digression: first, it is (...) a kind of escape from the phenomenal world; and second, it allows Socrates to become just and pious with wisdom. The crucial difference between Socrates and the philosopher that prevents the former from being as godlike as the latter is his epistemic barrenness, on account of which he cannot define the constitutive virtues of godlikeness, i.e., justice, piety, and wisdom. As a barren midwife of the intellect, Socrates practices godlikeness but does not have a philosophical understanding of its nature. Nevertheless, by extolling the life of the philosopher he urges others to aspire to what he can never attain, philosophical godlikeness. (shrink)

In this paper, I examine several key issues relating to the definition of knowledge as perception in the first part of Plato's Theaetetus. I begin by explaining the workings of the ‘secret doctrine’ of perception, which is introduced in order to support the idea that perception is incorrigible, and then turn to examine the two refutations of the definition of knowledge as perception which appear at the end of the first part of the Theaetetus. I shall present and explain distinct (...) lines of interpretation pertaining to these passages and explore the consequences they attempt to draw regarding Plato's views on the perceptual world, the nature of perception and how these bear on his conception of knowledge. (shrink)

In this essay, I propose a novel hybrid metanormative theory. According to this theory, speakers making normative claims express both cognitive and motivational attitudes in virtue of the constitutive norms of the particular speech acts they perform. This view has four principal virtues: it is consistent with traditional semantic theories, it supports a form of motivational judgment internalism that does justice to externalist intuitions, it illuminates the connection between normative language and normative thought, and it explains how speakers can express (...) different conative states when speaking in different normative domains. In the first section, I discuss the theories of Stephen Finlay and David Copp. I show that they each come very close to having it both ways but ultimately fail. Understanding the shortcomings of these views is instrumental to a clear presentation of my own Hybrid Speech Act theory in section two. In the final section, I demonstrate how my view achieves its four advantages. (shrink)

Protagoras believes that all beliefs are true. Since Protagoras' belief that all beliefs are true is itself a belief, it follows from Protagoras' belief that all beliefs are true that Protagoras' belief is true. But what about the belief that Protagoras' belief is false? Doesn't it follow, by parallel reasoning and not at all trivially, that if all beliefs are true and there is a belief that Protagoras' belief is false, then Protagoras' belief is false?

Any comprehensive interpretation of the "Theaetetus" has to provide answers to, among others, two very general questions concerning that dialogue: "What is Plato's relation to the problems faced in the "Theaetetus"?" and "What is the significance of the absence of the Forms from the discussion of the "Theaetetus", given their undoubted relevance to the topic of the dialogue, i.e. knowledge?" Predominantly, the answer given to the first question in the literature has been that the problems are those that Plato is (...) trying to tackle and the one to the second question, when it has been addressed at all, that the Forms are left out of the discussion because Plato no longer thought them relevant, either for having abandoned or seriously revised them, by the time of writing the "Theaetetus". In this study of the Wax Block and the Aviary models of judgment that occur in the second part of the "Theaetetus" as part of its discussion of the problem of false judgment, I argue that the problems faced there actually arise because of the neglect of Forms. The discussion of the second part is, I contend, carried out on a materialist ontology, an ontology assumed because it suits the definition of knowledge as true judgment which inaugurates that part of the dialogue, an ontology in no way subscribed to by Plato. The Wax Block is, I explain, a materialist model and fails in the case of judgments about numbers for treating them on a par with material subjects, ignoring their intelligible status. In particular, it fails to distinguish judging 5 and 7 to be 11 from judging 12 to be 11 because of its neglect of Forms; Plato would distinguish those judgments by distinguishing 5 and 7 from 12 with help from his part-whole analysis, to which the Forms are essential. (shrink)