I argue that Plato thinks that a sunaition is a mere tool used by a soul (or by the cosmic nous) to promote an intended outcome. In the first section, I develop the connection between sunaitia and Plato’s teleology. In the second section, I argue that sunaitia belong to Plato’s theory of the soul as a self-mover: specifically, they are those things that are set in motion by the soul in the service of some goal. I also argue against several (...) popular and long-standing interpretations, namely, that sunaitia correspond to Aristotle’s idea of hypothetical necessity, that sunaitia are the ‘how’ in an explanation (whereas the true cause is the ‘why’), and that Plato’s causal views should be read through Aristotle’s fourfold schema. I conclude the article by surveying the history of sunaitia after Plato’s usage. (shrink)

In this paper I first address what I consider a central issue in the account of perception in Plato’s Timaeus, namely, how the pathemata pass through the body to reach the soul, and thus become aistheseis. My point in Section 1 is that in tackling this issue Plato aims to provide a firm physiological basis to the notion of perception that starts to emerge in the Theaetetus and the Philebus and is crucial to the late development of his theory of (...) cognition. In the ensuing section I try to put the account of perception in the Timaeus into a historical perspective, aiming to highlight two points: a) Plato’s description of the way in which sensible impressions “travel” inside the body and interact with its parts and other constituents is largely indebted to previous theories, such as those we find, for example, in Empedocles and a few Hippocratic writers; b) The leading role in this story (where internal air plays a significant supporting role) is played by blood flowing through the vascular system and thus performing a crucial cognitive function. Moreover, emphasizing the role of blood as well as analyzing the elaborate way in which perceptions are transmitted through the body to the soul proves vital to appreciate (in Section 3) the cognitive status of the lower parts of the soul (which are more involved in perception) and their relation to reason. Overall, the paper adds further elements to our understanding of Plato’s embodied approach to cognition. I had already written (and submitted) this article when Johansen (2021) was published. The latter’s approach to the role of blood in Plato’s physiology of knowledge in the Timaeus converges in part with mine (as I was pleased to find out), partly due to our overlapping sources and bibliography. (shrink)

The principles governing elemental composition, variation, and change in Plato’s Timaeus appear to be incompatible, which has led commentators to prioritize some of the principles to the exclusion of others. Call this seeming incompatibility the problem of isomorphic variants. In this paper, I develop the theory of proportionate atomism as a solution to this problem. Proportionate atomism retains the advantages of rival interpretations but allows the principles of material composition, variation, and change to combine into an internally coherent and explanatorily (...) powerful atomic physics. (shrink)

In one of the most famous but equally obscure passages in the Timaeus, Plato describes the generation of time and the heavens. The “moving image of eternity” (37d5) is commonly read as Plato’s most general characterisation of time. Rémi Brague famously challenged the traditional interpretation on linguistic grounds by claiming that Plato actually did not conceive of time as an image (εἰκών) but rather as a number (ἀριθμός). In this paper, I shall claim that this controversy is by no means (...) a modern one. The traditional interpretation is mostly owed to Plato’s most prominent reader, Plotinus, who famously conceives of time in relation to eternity (Enn. III.7.13.24-25). Brague’s alternative reading, however, is anticipated by Simplicius’ attempt to refute the Plotinian interpretation, as I shall show. According to my reconstruction, Simplicius’ reading of the Timaeus not only shows why the traditional interpretation falls short, but it also offers a systematic argument that bolsters Brague’s alternative reading. Finally, I shall show that this is consistent with Plato’s text. It shall become clear that current interpretative problems are essentially prefigured in the late ancient debate. (shrink)

It is a notion commonly acknowledged that in his work Timaeus the Athenian philosopher Plato (_c_. 429–347 BC) laid down an early chemical theory of the creation, structure and phenomena of the universe. There is much truth in this acknowledgement because Plato’s “chemistry” gives a description of the material world in mathematical terms, an approach that marks an outstanding advancement over cosmologic doctrines put forward by his predecessors, and which was very influential on western culture for many centuries. In the (...) present article, I discuss inter-transformations among Plato’s four types (fire, air, water, and earth) as well as the interpretation they received in the literature. I find that scientists and scholars generally emphasized (and often misunderstood) mathematical aspects of these “reactions” over the philosophical ones. I argue that Plato’s “chemistry” in fact bears on crucial topics of his philosophical system, such as Forms, Becoming, causation and teleology. I propose that consideration of these doctrines help to understand not only the sense of his “chemical” reactions, but also the reason why their stoichiometry is by surface balance and is restricted only to types that come to be and pass away but not to those that provoke the inter-transformations. (shrink)

I argue that, according to Plato, the body is the sole cause of psychic disorders. This view is expressed at Timaeus 86b in an ambiguous sentence that has been widely misunderstood by translators and commentators. The goal of this article is to offer a new understanding of Plato’s text and view. In the first section, I argue that although the body is the result of the gods’ best efforts, their sub-optimal materials meant that the soul is constantly vulnerable to the (...) body’s influences. In the second section, I argue that every psychic disorder is a disruption of the motions of the inner psychic circles by the body; moreover, I defend my translation of 86b. In the final section, I argue that the goal of education is to restore the circles to their original orbits, and I disarm a possible objection that bad education is also a cause of psychic disorder. (shrink)

ABSTRACT The Gorgias presents us with a mystery and an enigma: Who was Callicles? And, what was Plato trying to accomplish in this dialogue? While searching for the identity of Callicles, we gain a better understanding of Plato's purpose for this dialogue, which is to use justice as a means for staking out the boundaries of four types of rhetoric. This article argues that Plato uses the Gorgias to reveal the deficiencies of sophistic nomos-centered rhetorics and an unjust sophistic phusis-centered (...) rhetoric, opening the door for a “true” rhetoric that he articulates in the Phaedrus and a universal justice based on virtue that he describes in the Republic. (shrink)

I argue that Plato believes that the soul must be both the principle of motion and the subject of cognition because it moves things specifically by means of its thoughts. I begin by arguing that the soul moves things by means of such acts as examination and deliberation, and that this view is developed in response to Anaxagoras. I then argue that every kind of soul enjoys a kind of cognition, with even plant souls having a form of Aristotelian discrimination (...) (krisis), and that there is therefore no completely unintelligent, evil soul in the cosmos that can explain disorderly motions; as a result, the soul is not the principle of all motion but only motion in the cosmos after it has been ordered by the Demiurge. (shrink)

Scholarship on Plato's Timaeus has paid relatively little attention to Tim. 77a–81, a seemingly disjointed passage on topics including plants, respiration, blood circulation, and musical sounds. Despite this comparative neglect, commentators both ancient and modern have levelled a number of serious charges against Timaeus' remarks in the passage, questioning the coherence and explanatory power of what they take to be a theory of respiration. In this paper, I argue that the project of 77a–81e is not to sketch theories of respiration, (...) circulation, and digestion, but to explain how the human body is maintained in light of and despite constant environmental depletion. Further, I argue that in order to understand this account of “the replenishing system,” we need to understand Timaeus' striking analogy of the fish trap or nassa. Commentators have generally focused directly on the workings of the bodily construction that Timaeus likens to a fish trap, but without considering how we should understand the analogy qua analogy. I develop a functional reading of the analogy that yields a coherent account of the replenishing system on which previous criticisms of Timaeus' remarks on respiration do not arise. Aside from lending greater unity to the passage, both internally and within its immediate context in the dialogue, this account of the replenishing system contributes to our understanding of Timaeus' reason-and-necessity explanatory framework as applied to the human body and has noteworthy implications for specific explanatory principles, in particular like-to-like motion and circular thrust. (shrink)

El concepto de _physis_ y sus derivados aparecen cientos de veces en los diálogos de Platón. Dado el carácter poco sistemático de su autor y los muchos años que dedicó a la escritura filosófica, no debe sorprender la diversidad de sentidos en que emplea un término ya de por sí complejo y polisémico. Por otra parte, Platón recoge, sintetiza y reelabora algunas de las concepciones fundamentales de la _physis_, siendo de especial relevancia las de los filósofos pluralistas, interesándose por los (...) elementos constitutivos del mundo físico y tomando partido en la discusión en torno a su carácter, bien mecánico, bien teleológico. En este estudio se analiza tanto la asimilación platónica de la física presocrática, como la influencia ejercida en el planteamiento aristotélico, especialmente por lo que respecta a la causalidad final y al principio del movimiento. (shrink)

This paper considers Berkeley’s use of Plato in Siris. Berkeley’s engagement with ancient thinkers in Siris has been a source of puzzlement for many readers. In this paper I focus on Siris § 266. In particular, I consider why Berkeley says of the Platonists that they “distinguished the primary qualities in bodies from the secondary” and why, given his own well-known misgivings about the distinction, he characterizes this as part of a “notion of the true system of the world.” I (...) argue that in Siris Berkeley accepts a distinctive form of corpuscularianism, and that he thinks a distinction between primary and secondary qualities follows from this. I further argue that in § 266, and elsewhere in Siris, Berkeley engages in a careful reading of Plato’s Timaeus, which he uses to bolster his defense of the compatibility between corpuscularianism and his immaterialist idealism. (shrink)

Within the Platonic (or Neoplatonic) dualistic conception of body and soul the difference between maleness and femaleness might appear to be a difference which only concerns the body, that is a difference which is not essential for determining who (or what) a certain human is. One might argue that, since humans are essentially their souls and souls are genderless, men and women are essentially equal. As my paper shows, though, Plato's and Proclus’ writings set out two ways of conceptualizing human (...) souls themselves as ‘sexed’ and of doing this in a way that female souls are determined to be inferior to male souls. By Plato's account, souls are indeed genderless in terms of their essence, but they attain maleness through virtuous and femaleness through vicious activities. Proclus, by contrast, conceptualizes souls as essentially ‘male’ or ‘female’. A soul in whose essence the Different predominates is female, while a soul in whose substance the Same predominates is male. And since the attainment and preservation of virtue depend on the strength of the Same, female souls are not vicious by Proclus’ account, but they bear a higher risk of becoming vicious. (shrink)

The rhetorical career of Libanius of Antioch (a.d.314–c.393) spanned the reigns of a number of fourth-century emperors. Like many orators, he used the trope of the emperor as a pilot, steering the ship of state. He did this for his imperial exemplar Julian and in fact for his predecessor Constantius II as well. Julian sought to craft an identity for himself as a theocratic king. He and his supporters cast him as an earthly parallel to the Christ-like versions of Heracles (...) and Asclepius he constructed, which was arguably a co-opting of Christian and particularly Constantinian themes. In a public oration, Julian even placed himself in the role of Christ in the Temptation in the Wilderness. This kind of overtly Christian metaphor was not Libanius’ preferred idiom, however, and he wrote of Julian as another kind of chosen and divine saviour-figure, one with its roots in the golden age of Greek philosophy. The figure of the κυβερνήτης, the ‘pilot’ or ‘helmsman’, is a philosophical concept with roots in the thought of the pre-Socratics but most familiar from Plato. The uses of this metaphor by Julian and Libanius highlight the rhetorical strategy and self-presentation the emperor employed during his reign. (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)

Plato is commonly considered a metaphysical dualist conceiving of a world of Forms separate from the world of particulars in which we live. This paper explores the motivation for postulating that second world as opposed to making do with the one we have. The main objective is to demonstrate that and how everything, Forms and all, can instead fit into the same world. The approach is exploratory, as there can be no proof in the standard sense. The debate between explaining (...) Plato’s ontology with a single world and requiring a two-world model to make sense of the same thing is typically about scouring the Platonic corpus for evidence and turning to Aristotle for help where we need it. The aim here is to dig deeper than what either of them, or anyone else, has said or implied about the number or worlds, searching instead for any insight that might be gained from the way Forms are supposed to exist versus what we ourselves might understand by existence. Although the paper is, at its most basic level, about the existence of the Forms, the intention is not to prove that they exist, nor to evaluate the proofs and objections already on record, but to consider how they might exist and what follows if they do. Dialogue toward consensus on why we think the Forms exist, and why we think they do not, could perhaps provide a smoother “second sailing” in waters where we have been unable to agree whether they do and where they would if they did. (shrink)

The ‘traditional’ interpretation of the Receptacle in Plato’s Timaeus maintains that its parts act as substrata to ordinary particulars such as dogs and tables: particulars are form-matter compounds to which Forms supply properties and the Receptacle supplies a substratum, as well as a space in which these compounds come to be. I argue, against this view, that parts of the Receptacle cannot act as substrata for those particulars. I also argue, making use of contemporary discussions of supersubstantivalism, against a substratum (...) interpretation that separates substratum and space in the Timaeus. (shrink)

In his opening speech, Timaeus (Timaeus27d5-29b1) argues that the cosmos must be the product of a craftsman looking to an eternal paradigm. Yet his premises seem at best to justify only that the world could have been made by such a craftsman. This paper seeks to clarify Timaeus’ justification for his stronger conclusion. It is argued that Timaeus sees a necessary role for craftsmanship as a cause that makes becoming like being.

By an ancient and honourable tradition, which began last year when I spared you this exercise, the President gives a Presidential Address only once during his term of office, on retirement. A presidential address in the summer season is a privileged occasion. Coming at the end of an active day, it is not the moment for a massive account of research. Rather it is an occasion when one may indulge with privilege in some directed impressionism, and that is what I (...) propose to do. (shrink)

The focus of this essay is on Xenophanes’ criticism of anthropomorphic representation of the gods, famously sounding like a declaration of war against a constituent part of the Greek religion, and adopting terms and a tone that are unequalled amongst “pre-Socratic” authors for their directness and explicitness. While the main features of Xenophanes’ polemic are well known thanks to some of the most studied fragments of the pre-Socratic tradition, a different line of enquiry from the usual one is attempted by (...) considering the multi-layered background of the religious beliefs revolving around the idea that the gods have human form as outlined in the tradition of epic poetry or represented in cult statues: in the light of this consideration Xenophanes’ text can take on some new characteristics. In the second part of the article, emphasis is put on the importance of the correlation Xenophanes established between the issue of the appearance of the gods and that of the certainty of knowledge, in terms that have exerted tremendous influence on later thought, most notably on Plato in the Timaeus. (shrink)

The aim of this paper is to explore why Deleuze takes up Hamlet's claim that ‘time is out of joint’. In the first part of this paper, I explore this claim by looking at how Deleuze relates it to Plato's Timaeus and its conception of the relationship between movement and time. Once we have seen how time functions when it is ‘in joint’, I explore what it would mean for time to no longer be understood in terms of an underlying (...) rational structure. The claim can be understood as about a relationship between time and action. In the second part of this paper, I want to relate this new understanding of time to Hamlet itself, in order to see how temporality operates within the play. I will conclude by relating these two different conceptions of time out of joint to one another through Nietzsche's eternal return. (shrink)

It hardly needs to be said that the parallel between mental and physical health plays an important part in Plato's moral philosophy. One of the central claims of the Republicis that justice is to the soul what health is to the body .1 Similar points are made in other dialogues.2 This analogy between health and sickness on the one hand and virtue and vice on the other is closely connected to the so–called Socratic paradoxes. Throughout his life Plato seems to (...) have clung in some sense to the ideas that justice is our greatest good, that the unjust man is correspondingly miserable and that no one is therefore willingly unjust. It follows from these ideas that the unjust man, like the sick man, is in a wretched state which is not of his own choosing. (shrink)

A generally ignored feature of Plato’s celebrated image of the cave in Republic VII is that the ascent from the cave is, in its initial stages, said to be brought about by force. What kind of ‘force’ is this, and why is it necessary? This paper considers three possible interpretations, and argues that each may have a role to play.

One of the hardest questions to answer for a (Neo)platonist is to what extent and how the changing and unreliable world of sense perception can itself be an object of scientific knowledge. My dissertation is a study of the answer given to that question by the Neoplatonist Proclus (Athens, 411-485) in his Commentary on Plato’s Timaeus. I present a new explanation of Proclus’ concept of nature and show that philosophy of nature consists of several related subdisciplines matching the ontological stratification (...) of nature. Moreover, I demonstrate that for Proclus philosophy of nature is a science, albeit a hypothetical one, which takes geometry as its methodological paradigm. I also offer an explanation of Proclus’ view of what is later called the mathematization of physics, i.e. the role of the substance of mathematics, as opposed to its method, in explaining the natural world. Finally, I discuss Proclus’ views of the discourse of philosophy of nature and its iconic character. (shrink)

Dans son interprétation du Timée, Calcidius rapporte un exposé de Numénius sur la manière dont Pythagore, suivi par Platon, conçoit l’origine du monde. À cette occasion, Numénius identifie la matière à trois entités : la dyade indéterminée, la nécessité et l’âme mauvaise du monde évoquée dans les Lois (fr. 52 Des Places). L’article montre en quoi ces trois analogies permettent de comprendre le rôle qu’il attribue à la matière dans l’origine du mal, et ce même avant l’incarna­tion de l’âme, d’après (...) les témoignages sur sa pensée fournis par Jamblique (fr. 43 Des Places) et Énée de Gaza (fr. 49 Des Places). Il analyse le contexte philo­sophique et exégétique de ces analogies, montrant combien la pensée de Numénius est profondément ancrée dans les cadres fournis par l’école platonicienne, tant pour ses choix herméneutiques que pour ses débats avec les autres écoles (le stoïcisme essentiellement ici). (shrink)

This thesis regards the ancient Pythagorean-Platonic idea of heavenly harmony as a philosophical paradox: stars are silent, music is not. The idea of ‘star music’ contains several potential opposites, including imagination and sense perception, the temporal and the eternal, transcendence and theophany, and others. The idea of ‘star music’ as a paradox can become a gateway to a different understanding of the universe, and a vehicle for a shift to a new – and yet very ancient – form of consciousness. (...) The ancient Greeks had a holistic form of consciousness, which was continually intermingling with a transpersonal dimension. This ancient state of consciousness was related to a musical understanding of the world, the Pythagorean-Platonic experience of the universe as an ordered cosmos. My research is approached from two angles, namely from the history of ideas and from musicianship, exploring how music is reflected in the world of thought. By reflexive re-reading of the sources, new insights into the nature of musical consciousness are explored. The idea of ‘star music’ can be found throughout the history of music and thought in the West, including Plato’s works and that of other ancient philosophers, through the Middle Ages, the Renaissance, the Romantic era and the twentieth century up to contemporary New Age music. As a conclusion, the paradox of ‘star music’ is connected to an experience of a shared transcendent meaning of music, which can be present in the moment of a musical performance. ‘Star music’ is a living paradox. (shrink)

Plato's comments on astronomy and the education of the guardians at Republic 528e ff have been hotly disputed, and have provoked much criticism from those who have interpreted them as a rejection or denigration of observational astronomy. Here I argue that the key to interpreting these comments lies in the relationship between the conception of enquiry that is implicit in the epistemological allegories, and the programme for the education of the guardians that Plato subsequently proposes. We have, I suggest, been (...) too eager to stress the similarities here, when recognition of the differences may supply us with the tools required for a better understanding of 528e ff, one that to a large extent disarms the anti-empirical critique. My discussion proceeds in three stages. Firstly, Plato takes great care to place his comments on astronomy in the context of the preceding epistemological allegories. Is there any evidence here, where Plato might be thought to discuss enquiry in general, that he rejected or denigrated observation? I argue that even if Plato advocated a 'Two Worlds' (TW) ontology, he still envisaged a dynamic process of enquiry, interrelating sensibles and intelligibles, the investigation of each being necessary but not sufficient to achieve the overall aim. Secondly, Plato appears to be deriving how we ought to go about educating the guardians from how we ought to conduct our enquiries. While the two are intimately related there are important differences, recognition of which turns the supposed rejection of observation into an affirmation of the need for an initial empirical approach. I contend that this makes good sense of the internal structure of 528e ff, and of its relations to other parts of the Republic. Thirdly, I discuss the Republic in relation to the evidence offered by later works on the question of astronomy and observation, and raise the question of whether Plato's views on the imperfection of the sensible world necessarily lead to the denigration of careful and prolonged empirical work. (shrink)

In the fifth book of Plato'sLaws(745e7–746a8), the Athenian stranger concedes that some requirements posed in the description of the ideal city might be unrealistically demanding. The passage quotes the due limits fixed with regard to wealth and the regulations about the number of children and the size of the family, as well as the rules to be observed in the allocation of houses in the city and in the countryside. The latter requirement is recalled at 746a6–7 (ἔτι δὲ χώρας τε (...) καὶ ἄστεος, ὡς εἴρηκεν, μεσότητάς τε καὶ ἐν κύκλῳ οἰκήσεις πάντῃ), where the word μεσότης is unanimously understood as indicating a geographic notion of ‘middle’, with regard to either the position of the houses in the ideal city, or that of the city in the territory. (shrink)

In Plato’s Timaeus, two different theories – the Receptacle theory and the geometrical particle theory – are presented to explain change in the natural world. In this paper, I argue that there is tension between the two theories. After examining several possible solutions for this tension, I conclude that Plato does not present it as something ready to be solved within the dialogue but, rather, as something to be understood in a way that maintains both theories. Finally, I also argue (...) that the contrast between the two theories in the Timaeus derives from a similar contrast in the Phaedo. (shrink)

The present paper focuses on some aspects of the Neoplatonist literary-metaphysical theory, which has clearly been expressed in the anony­mous Prolegomena to Plato’s philosophy and further confirmed in Proclus’ exegesis of the Timaeus. Thus, this contribution, examines and compares several passages from the Prolegomena and from Proclus’ Commentary on the Timaeus with a view to showing that it is legiti­mate to speak of a certain cosmogony of the Platonic dialogue that is analogous to that of the macrocosm. Moreover, the analogy (...) between macrocosm and microcosm makes it possible to further investigate the similarity between the λόγος-ζῷον of the Demiurge and that of Timaeus, on the one hand, and the reality which the λόγος expresses, on the other. This similarity turns out to be both structural/morphological and content-related/semantic. Thus, by combining the natural and theo­logical science, the analysis of the “generation” of the macrocosm and microcosm brings out the strongly analogical nature of Plato’s dialogues, which is particularly visible in the Timaeus. (shrink)

There are two types ofaisthēsisin theTimaeus, which involve distinct physiological processes and different kinds of soul, appetite and reason respectively. This distinction explains Timaeus’ ambivalent attitude towardsaisthēsis: on the one hand, it is one of the main causes of the disruption of the orbits of the immortal soul upon embodiment; on the other hand, it plays a central role in restoring the immortal soul to its original, god-like condition.

_ Source: _Volume 61, Issue 1, pp 43 - 59 Contemporary debate on Plato’s cosmogony often assumes that the ‘literal’ reading of the _Timaeus_ yields an account of creation, while the view that the cosmos always existed is non-literal. In antiquity, Taurus has been seen as a forerunner of the ‘non-literal’ interpretation. This paper shows, on the contrary, that Taurus’ argument for the sempiternity of the cosmos is a literalist one, relying on a strict linguistic analysis of _Timaeus_ 28b6-8.

Plato’s demiurge makes a series of questionable decisions in creating the world. Most notoriously, he endeavors to replicate, to the extent possible, some of the features that his model possesses just insofar as it is a Form. This has provoked the colorful complaint that the demiurge is as raving mad as a general contractor who constructs a house of vellum to better realize the architect’s vellum plans (Keyt 1971). The present paper considers the sanity of the demiurge’s reasoning in light (...) of Timaeus 32c5-33b1, where he invokes considerations of wholeness, completeness, uniqueness, and eternality in deciding to build the body of the world from all of each of the simple bodies. Since the passage makes no appeal to the demiurge’s intelligible model, one can mine it for indications of the value that the demiurge takes those features to have independent of mimetic goals. I argue that, for Plato, those features are intrinsically good-making and, thus, that it is not only appropriate for them to characterize Forms qua Forms but also that it is appropriate for the demiurge to aim at replicating them, to the extent possible, in his creation. In particular, I argue that the demiurge’s success in instilling a circumscribed version of each feature in his creation helps to qualify it as a genuine being despite the fact that it comes to be. (shrink)

This dissertation explores Aristotle’s use of teleology as a principle of explanation, especially as it is used in the natural treatises. Its main purposes are, first, to determine the function, structure, and explanatory power of teleological explanations in four of Aristotle’s natural treatises, that is, in Physica (book II), De Anima, De Partibus Animalium (including the practice in books II-IV), and De Caelo (book II). Its second purpose is to confront these findings about Aristotle’s practice in the natural treatises with (...) the theoretical picture of the structure of teleological explanations gained from Aristotle’s theory of scientific demonstration. For this purpose a new interpretation of Analytica Posteriora II.11 is presented. This study thereby contributes to recent scholarship on the relation between Aristotle’s philosophy of science and his philosophy of nature, while at the same time adding to our knowledge of Aristotle’s notion of teleology in terms of its explanatory merits and limits. (shrink)

L’adjectif eoikos apparaît dans trois passages cruciaux de la pensée grecque (Xénophane, fr. B35 ; Parménide, fr. B8, 60 ; Platon, Timée, 29b3-c3), caractérisant une certaine « ressemblance » à la vérité qui se veut constitutive du discours du savant. En fait, le long de cet examen on découvre que les trois usages du terme ne peuvent pas être disposés le long d’une ligne continue, vu la difficulté de comprendre à quelle notion de vérité, sous quel point de vue, et (...) avec quel degré d’évidence, ce discours se veut « ressemblant » selon l’occasion. Dans le cas de Parménide, cet aspect passe même au second plan, puisqu’on assiste à la prédominance d’une autre connotation qui accompagne le terme eoikos à partir de l’usage homérique, à savoir celle de la « convenance » à un contexte communicatif. L’article cherche dans l’ensemble à éclairer les déplacements que subit la logique de la similitude (et des procédés analogiques qui s’y greffent) en passant par des cadres ontologiques et épistémologiques aussi différents que le sont ceux de Xénophane, Parménide et Platon. (shrink)

This article endeavors to ascertain whether Plato may be regarded as a prophet. This involves defining what a prophet is and examining a number of literary sources in order to uncover the needed evidence and to make appropriate comparisons with known prophets from ancient times. Thus, this treatise includes evidence obtained from several classic texts, plus excerpts of Plato’s writings, life experiences, influence from Socrates, and Plato’s foreign travels. Also considered are biblical passages about prophets from the Old Testament. Thereby, (...) a philosophical and theosophical investigation is undertaken to examine the extent to which Plato satisfies the criteria for being considered to have been a prophet in the classical sense. (shrink)

It is a well-established opinion in the literature that the immediate circle of Plato’s disciples maintained that the generation of the cosmos described in the Timaeus was to be understood as an illustrative, or educational metaphor. On this account, Plato’s students were the first to hold an eternalist, metaphorical reading of the generation of the world, challenged by the Peripatos. When criticising their position in the De Caelo, however, Aristotle describes Early Academic philosophers as holding the more nuanced view that (...) the world is ‘indestructible and yet generated’ (ἄφθαρτον μὲν […] γενόμενον δέ). Is it possible to make any sense of this formulation and restore a different position for Early Academic philosophers? In this paper, I claim that the standard reading can be challenged and that there is ground to believe that Speusippus and Xenocrates held that the world is generated but everlasting. What they denied having happened in time and said should be understood as an illustrative metaphor is the transition from the absence of an order to order or, in other words, the cosmogonic process itself. (shrink)

In this article, we provide an analysis of the description of the pre-cosmic chaos and the function of this description within the context of the theory of participation which can be reconstructed in Plato’s Timaeus. More specifically, we will assume that the pre-cosmic chaos represents a counterfactual situation in which the universe is conceived without the action of the intelligible. This counterfactual state will be considered as an initial sequence allowing to visualize in a quasi-spatial way how the phenomenon of (...) participation operates. We will give a detailed analysis of the passage (52d4-53b7) in order to integrate it as a sequence of what we will call the anatomy of participation. In our study, two more questions will be examined: i) the representation of the sensible without the intelligible in Plato’s works (Timaeus, Statesman, Philebus, Parmenides) and ii) the role of world soul as a possible cause of all movements in the universe (Timaeus and Laws). (shrink)

This paper re-constructs Plato's ‘philosophy of geometry’ by arguing that he uses a geometrical method of hypothesis in his account of the cosmos’ generation in the Timaeus. Commentators on Plato's philosophy of mathematics often start from Aristotle's report in the Metaphysics that Plato admitted the existence of mathematical objects in-between ( metaxu) Forms and sensible particulars ( Meta. 1.6, 987b14–18). I argue, however, that Plato's interest in mathematics was centred on its methodological usefulness for philosophical inquiry, rather than on questions (...) of mathematical ontology. My key passage of interest is Timaeus’ account of the generation of the primary bodies in the cosmos, i.e. fire, air, water and earth ( Tim. 48b–c, 53b–56c). Timaeus explains the primary bodies’ origin by hypothesising two right-angled triangles as their starting-point ( arkhê) and describing their individual geometrical constitution. This hypothetical operation recalls the hypothetical method which Socrates introduces in the Meno (86e–87b), as well as the use of hypotheses by mathematicians which is described in the Republic (510b–c). Throughout the passage, Timaeus is focussed on explicating the bodies in terms of their formal structure, without however considering the ontological status of the triangles in relation to the physical world. (shrink)

This article shows how Plato’sParmenidesexplores the relationship between place and the geometric forms that are inscribed in it, independently of sensation, becoming and causality. The analysis concurs with essential points of what is said in theTimaeusaboutkhôra, this receptacle deprived of any intrinsic qualities, on which every sensitive reality is drawn.

Roger Bacon has often been victimized by his friends, who have exaggerated and distorted his place in the history of mathematics. He has too often been viewed as the first, or one of the first, to grasp the possibilities and promote the cause of modern mathematical physics. Even those who have noticed that Bacon was more given to the praise than to the practice of mathematics have seen in his programmatic statements an anticipation of seventeenth-century achievements. But if we judge (...) Bacon by twentieth-century criteria and pronounce him an anticipator of modern science, we will fail totally to understand his true contributions; for Bacon was not looking to the future, but responding to the past; he was grappling with ancient traditions and attempting to apply the truth thus gained to the needs of thirteenth-century Christendom. If we wish to understand Bacon, therefore, we must take a backward, rather than a forward, look; we must view him in relation to his predecessors and contemporaries rather than his successors; we must consider not his influence, but his sources and the use to which he put them. (shrink)

On the face of it, Plato's treatment of aisthesis is decidedly ambiguous. Sometimes he treats aisthesis as a faculty which, though distinct from all rational capacities, is nonetheless capable of forming judgments such as ‘This stick is bent’ or ‘The same thing is hard and soft’. In the Theaetetus, however, he appears to separate aisthesis from judgment, isolating the former from all prepositional, identificatory and recognitional capacities. The dilemma is easily expressed: Is perception a judgmental or cognitive capacity, or is (...) it a non-judgmental, non-cognitive capacity? If the former, how does perception differ from belief? If the latter, is perception a faculty of the rational or irrational soul? Not surprisingly, the topic has received much scrutiny over the years. And equally unsurprisingly, the debate has turned as much on what it means for a capacity to be judgmental, cognitive, non-judgmental or non-cognitive, as on whether Plato says that it is of either kind. (shrink)

In the proem that precedes the account of the generation of the world, Timaeus provides very important elements for understanding the discourse he is about to delivery. It is a complex text that displays at least three different levels: dialectical, analogical (or metaphorical) and epistemological. In the dialectical section, Timaeus establishes that the sensible universe is a generated reality and as such has a cause; in the metaphorical section, he indicates the analogical schemes he will use to explain the genesis (...) of the cosmos (technical and biological) and the causes on which it depends. Finally, in the epistemological section he explains the reason why this exposition cannot achieve truth but must be content with likeness. (shrink)

The main aim of this study is to explain passage 35b4-37a2 of Plato’s Timaeus which deals with three main topics: the mathematization of the world’s soul, its movement, and its binding to the world’s body. First, it is argued that the mathematical structure of the world-soul allows it to participate in and be sensitive to harmony, which is essential for the correct workings of its cognitive capacities. Second, the division of the world-soul to the circle of the same and the (...) circles of the different and its self-motion comes in. This allows it to ‘touch’ and cognize the forms and the material things, as well as rule the movement of the corporeal world and care for it. In this aspect, the world-soul continues the process that started with the original creative act of the demiurge. Third, it is argued that the description of the world-soul’s binding to the world-body entails its conception as a spatially extended entity, which, in turn, explains of the possibility of an interaction between the corporeal world and its soul. (shrink)