Sense experience, naïvely conceived, is a way of knowing perceptible properties: the colors, sounds, smells, flavors, and textures in our perceptual environment. So conceived, ordinary experience presents the perceiver with the essential nature of a property like Sky Blue or Middle C, such that how the property appears in experience is identical to how it essentially is. In antiquity, as today, it was controversial whether sense experience could meet the conditions for knowledge implicit in this naïve conception. Aristotle was a (...) partisan in this debate, but his position is poorly understood. This dissertation examines how Aristotle’s perceptual psychology responds to ancient challenges to the naïve conception, and so articulates his defense of perceptual knowledge. -/- Aristotle’s defense relies on an ontology of “perceptual qualities"—a core class of perceptible properties—according to which those qualities, despite having a perceiver-independent essence rooted in the physics of causation and affection, nevertheless can be present in experience as they essentially are. Chapter 1 defends this realist and objectivist reading against competing interpretations, which overlook a crucial distinction between perceptual qualities and perceptual objects. Chapter 2 presents Aristotle’s ontology as a physicalism that uncharacteristically allows for perceptual qualities to appear in experience as they essentially are. -/- This ontology informs Aristotle’s account of the psychological conditions under which perceivers actually are presented with the essence of perceptual qualities. The locus of this account is an obscure passage where Aristotle purports to show that the senses “discriminate” perceptual qualities because the senses are “mean states” (An. 2.11, 424a5–7). Chapter 3 develops a comprehensive interpretation of the sensory mean state, which Chapter 4 uses to elucidate Aristotle’s argument for sensory discrimination. Sensory discrimination turns out to be a process in which the essence of a perceptual quality comes to be present in the affection it produces in a perceiver. For Aristotle, this shows that sense perception meets a condition for knowledge that his predecessors, including Plato, thought it could not meet. For in his view, but not in theirs, sense experience shares in both the truth and the essence of the qualities it perceives. (shrink)

In defending the view that justice is the advantage of the stronger, Thrasymachus puzzlingly claims that rulers never err and that any practitioner of a skill or expertise (τέχνη) is infallible. In what follows, Socrates offers a number of arguments directed against Thrasymachus’ views concerning the nature of skill, ruling, and justice. Commentators typically take a dim view of both Thrasymachus’ claims about skill (which are dismissed as an ungrounded and purely ad hoc response to Socrates’ initial criticisms) and Socrates’ (...) latter arguments (which are deemed extremely weak). In this paper, I clarify Thrasymachus’ views (and those of several other ancients) concerning qua locutions and the nature of skill and ability and I reconstruct Socrates’ arguments against Thrasymachus’ views concerning skill and justice. I argue that Thrasymachus’ views are not ungrounded or ad hoc and that Socrates’ arguments are rather different (and significantly stronger) than often supposed. (shrink)

A new translation and edition of Aristotle's Protrepticus (with critical comments on the fragments) -/- Welcome -/- The Protrepticus was an early work of Aristotle, written while he was still a member of Plato's Academy, but it soon became one of the most famous works in the whole history of philosophy. Unfortunately it was not directly copied in the middle ages and so did not survive in its own manuscript tradition. But substantial fragments of it have been preserved in several (...) works by Iamblichus of Chalcis, a third century A.D. neo-Pythagorean philosopher and educator. On the basis of a close study of Iamblichus' extensive use and excerption of Aristotle's Protrepticus, it is possible to reconstruct the backbone of the lost work, and then to flesh it out with the other surviving reports about the work from antiquity (for example in Alexander of Aphrodisias and other ancient commentators on Aristotle). It is also possible to identify several papyrus fragments of the work, and many references and literary allusions in later authors, especially Cicero, whose own lost dialogue Hortensius was a defense of philosophy modeleld on Aristotle's. (shrink)

Julia Annas is one of the few modern writers on virtue that has attempted to recover the ancient idea that virtues are similar to skills. In doing so, she is arguing for a particular account of virtue, one in which the intellectual structure of virtue is analogous to the intellectual structure of practical skills. The main benefit of this skill model of virtue is that it can ground a plausible account of the moral epistemology of virtue. This benefit, though, is (...) only available to some accounts of virtue. Annas claims that Aristotle rejects this skill model of virtue, and so the model of virtues as a skill that Annas endorses for the modern virtue theory is Socratic. This paper argues that while Aristotle rejects the Socratic model of virtue as a skill, he does not reject the model of virtue as a skill altogether. Annas has mischaracterized Aristotle's position on the skill model, because she has not recognized that Aristotle endorses a different account of the structure of skill than the one put forth by Socrates. In addition, recent research on expertise provides an account of skills very much at odds with the description of skills offered by Annas, but similar to the account endorsed by Aristotle. Contrary to Annas, not only is the skill model of virtue compatible with a neo-Aristotelian account of virtue, but it also appears that basing a skill model of virtue on a Socratic account of virtue is likely to prove unsuccessful. (shrink)

The aim of this paper is to examine the considerations on stochastic arts in Antiquity and to show how Galen’s analysis concerning the “art of conjecturing” constitutes a preferable alternative to the traditional ways used by philosophers to explain the inherent fallibility in the medical art. By distinguishing the scientific diagnosis from the conjectural one, Galen encompasses all cases relevant to the medical art. The former, because of its general nature, can be theorized. As for the latter, it concerns only (...) the individual and is therefore not likely to enter the theory, except by the method that makes it possible. This paper attempts to outline the modus operandi underlying the technical conjecture in order to illustrate Galen’s deftly developed position on a subject almost exclusively investigated by philosophers until then. (shrink)

I argue for the view that the scientific model which Plato consistently had in mind when sharpening his main ethical theory was medicine. Moreover, I ascribe to Plato a “medical model of ethics”. A careful examination of this model reveals how Plato appropriates several medical concepts and ideas by employing two central methodological devices in his thought: dialectical transposition and analogical characterisation. In discussing them, I identify different kinds of medical references in the dialogues –not all medical references in Plato (...) have the same methodological status– and draw greater attention to the most recurrent medical analogies in them. More generally, the paper is also meant to provide a case study of the complex relationship between medicine and philosophy in Antiquity by examining in a new light the various ways in which the former served as an epistemological and ethical model for the latter. (shrink)

This paper examines the nature of Aristotelian phronesis , how it is attained, and who is able to attain it inside the polis . I argue that, for Aristotle, attaining phronesis does not require an individual to perfect his practical wisdom to the point where he never makes a mistake, but rather it is attained by certain individuals who are unable to make a mistake of this kind due to their education, habituation, and position in society.

This essay explores the interrelation of skills and virtues. I first trace one line of analysis from Aristotle to Alasdair MacIntyre, which argues that there is a categorical difference between skills and virtues, in their ends and intrinsic character. This familiar distinction is fine in certain respects but still importantly misleading. Virtue in general, and also some particular virtues such as ritual propriety and practical wisdom, are not just exercised in practical contexts, but are in fact partially constituted by the (...) mastery of certain skills. This has implications for moral psychology, specifically how we might understand the acquisition of virtue, as well as its very nature. To try to make this claim plausible I analyze two case studies from early Confucianism: treatment of ritual propriety as a cardinal virtue, and Mencius's less carefully integrated treatment of excellence at moral discernment. I conclude by revisiting the question of the relations between skill and virtue, and exploring a few of the difficulties implied by my account of early Confucian ethics. (shrink)

Children learn and come to know things about the world at a very young age through the testimony of their caregivers. The challenge comes in explaining how children acquire such knowledge. Since children indiscriminately receive testimony, their testimony-based beliefs seem unreliable, and, consequently, should fail to qualify as knowledge. In this paper I discuss some attempted explanations by Sandy Goldberg and John Greco and argue that they fail. I go on to suggest that what generates the problem is a hidden (...) assumption that the standards for testimonial knowledge are invariant between children and cognitively mature adults. I propose that in order to adequately explain how children acquire testimonial knowledge we should reject this hidden assumption. I then argue that understanding knowledge in terms of intellectual skills gives us a plausible framework to do so. (shrink)

This dissertation is a study of the relation between Aristotle’s ethics and the crafts (or technai). My thesis is that Aristotle’s argument is at key points shaped by models proper to the crafts, this shaping being deeper than is generally acknowledged, and philosophically more problematic. Despite this, I conclude that the arguments I examine can, if revised, be upheld. The plan of the dissertation is as follows – Preface: The relation of my study to the extant secondary literature; Introduction: The (...) pre-Platonic concept of technē, as evidenced in Greek philosophical and literary sources, in particular the early Hippocratic corpus; Chapter one: The Platonic concept of technē, followed by an investigation of whether Plato affirms a virtue-technē in the Protagoras and Republic; Chapter two: Aristotle’s concept of technē, followed by scrutiny of his arguments in NE VI.5 against a virtue-technē, and of his analyses of slavery and deliberation; Chapter three: An exposition of Aristotle’s function argument, followed by a dominantist interpretation of it, and an explanation of dominantism as in part a technē-influenced doctrine; Chapter four: An examination of Aristotle’s ethical mean and its problems, with a diagnosis of these in terms of influence by the Philebus, and by paradigms derived from the crafts; Chapter five: Argument that Aristotle’s theory of habituation suffers from two significant opacities, these being a function of influence both by the Republic, and by models of craft-learning; Conclusion: Response to key objection; Aristotle’s ethics revised, defended. (shrink)