Plotinus : a detailed study of Plotinus' theories on matter and the soul , in relation to select passages from his treatise Against the Gnostics.

The text of Theaetetus 155b1-2 as recorded in the manuscripts and printed in current editions of the dialogue is marked by a syntactical anomaly (ἀλλά postpositum) and a logical non sequitur (arbitrary transition from a copulative to an existential use of εἷναι and vice versa). Attempts at emendation by Proclus, Stephanus and Campbell have all been unsuccessful. To find the way back to Plato's original text, the reader will have to fight his way through a logical tangle (the result of (...) a double negation) and abandon the modish, but erroneous, belief that there is no difference in ancient Greek between ``complete'' and ``incomplete'' uses of εἷναι. (shrink)

Plato's paradox of relative change in size and number (154e7-155c7) cannot be understood unless the text is emended (see Part i of this article) and unless full weight is given to shifts of mood and tense and to the play of particles. The critical reader will also need to adapt to a non-Fregean concept of equality and to a definition of change different from Geach's definition of "Cambridge change''. Only so will the structure of the paradox explain young Theaetetus' bewilderment, (...) while also showing that the author of the dialogue was not himself a victim of the paradox he has created. (shrink)

Hitherto reconstructions of Empedocles' cosmic cycle have usually been offered as part of a larger work, a complete history of Presocratic thought, or a complete study of Empedocles. Consequently there has perhaps been a lack of thoroughness in collecting and sifting evidence that relates exclusively to the main features of the cosmic cycle.

The origin of matter is one of the last and greatest unsolved mysteries bedevilling modern attempts at understanding the philosophy of the "Enneads." There are two stages in the production of Intellect and of soul. The One or Intellect produces an undifferentiated other, which becomes Intellect or soul by itself turning towards and looking towards the prior principle, with no possibility of the One's "turning towards" or "seeing" itself. But where does matter come from? To arrive at his conception of (...) matter, Plotinus has radically altered the definitions of non-being given by Plato and Aristotle in their refutation of Parmenides. Matter, for Plotinus, is a non-being opposed, not to "the being of each thing", as in Plato's "Sophist," but to all "the beings properly so-called", i.e. to all the forms. It is then further identified with Aristotle's definition of non-being as privation, with the crucial difference that privation, for Plotinus, is made a permanent substratum of change. This re-formulation of ideas from the "Sophist" and the "Physics" proves unmistakably that it is matter which is generated when soul produces a "non-being" which is also a "total lack of definition". The production of matter by soul does not, however, follow the model of the production of Intellect from the One or of soul from Intellect. Since matter is lifeless, it cannot turn towards its source. Soul therefore has to be herself directly responsible both for the production of matter and for the covering of matter with form. Matter is therefore included among the products which stem ultimately from the One. But the origin and the nature of matter have to be understood as very different from the double process of emanation which lies at the origin of Intellect and of soul. (shrink)

Does the matter of the sensible world, for Plotinus as for Plato and Aristotle, exist without a cause of its existence? Long divided on the answer to that question, scholarly opinion now veers in favour of a derivation of matter from principles prior to matter, with disagreement limited to the details of the theory. What exactly is implied by the various passages of the Enneads where Plotinus writes of soul or physis in relation to `darkness' and `non-being', matter and form? (...) In the pages that follow, I argue that the soul's `making' of a `non-being' that by implication is matter, in Enn. III 9 [13] 3, is logically antecedent to the `making' of `visible form' ascribed to physis in Enn. III 8 [30] 2. A detailed study of the context and the syntax of the latter passage shows that, contrary to an interpretation put forward recently in this Journal, the two `makings' cannot be the same. (shrink)

A curious irony hangs over the two similes of the lantern and the clepsydra which Empedocles used to describe his theories of seeing and breathing. Similes were a feature of Empedocles' style, and it is clear that on these two in particular he has lavished considerable care. They have been preserved in their entirety, as almost the longest continuous quotations which Aristotle makes from any author. Despite such auspicious beginnings, these two similes have proved peculiarly resistant to modern attempts at (...) interpretation. The reason for this, I shall try to show, is that certain features in the two similes took on a spurious significance as a result of Plato's remodelling of Empedocles' theories. Difficulties of interpretation have been caused by trying to read back these innovations of Platonic theory into details of the similes that in their original context were fortuitous and inessential.In Plato vision occurs when fire leaves the eye and joins fire outside to form a single compacted body, along which movements from the visible object are communicated as sensations to the eye.According to Theophrastus, Empedocles explained vision as the result of effluences which are given off from objects and enter the appropriate pores of the eye. Dark effluences enter the watery pores of the eyes, and bright effluences enter the fiery pores of the eye. As I have tried to show in an earlier article, Empedocles distinguished good and bad vision, by day and by night, for eyes with a predominance of fire and for eyes with a predominance of water. Good vision results when the dark and light elements which enter the eye are equally balanced. Poor vision results either when there is too much fire in the eye, so that we are dazzled, or when there is too much water in the eye, so that our vision is dimmed. In the whole of his detailed and one would have thought exhaustive account, Theophrastus says nothing about fire leaving the eye as a factor in the act of vision. (shrink)

O artigo versa sobre considerações acerca do direito natural, destacando primeiramente a iniciativa, datada do final no século XIX, de retomá-lo como seara jurídica, na forma de uma disciplina a ser considerada nos estudos do direito e como parte efetiva do ordenamento jurídico. A seguir, baseando-se em doutrinas típicas do positivismo, serão analisados argumentos contrários à consideração efetiva do direito natural, procurando-se demonstrar sua inconsistência.

O objetivo deste artigo é estabelecer algumas considerações sobre o papel dos procedimentos de posição original e equilíbrio reflexivo na teoria da justiça como equidade de John Rawls, nas obras A Theory of Justice, Political Liberalism e Justice as Fairness: A Restatement. Eu pretendo mostrar que Rawls faz uso de um modelo coerentista-pragmático de justificação dos princípios de justiça em um âmbito público, que é não-fundacionalista em razão da interconexão entre estes procedimentos.

Abstract Plotinus did not set out to be obscure. Difficulties of interpretation arise partly from his style of writing, compressed, elliptical, allusive. The allusions, easily enough recognisable by those he was writing for, are often not recognised at all by the modern reader who no longer has at his fingertips the texts of Plato and Aristotle that Plotinus undoubtedly alludes to, but whose authors he has no need to name. So it is pre-eminently with his subtle use of earlier ideas (...) in tackling the difficult question of the nature of matter and its place in the scheme of emanation. The frequent references to matter as `non-being' and as `privation' can be understood only if they are seen as a radical adaptation of the paradoxical definition of a `form that is, of what is not' in Plato's Sophist (258 D 5-7) and as a deliberate correction of Aristotle's unsuccessful attempt at including female desire in an analysis of privation in the Physics (i 9, 192 a 22-25). Only when the debt to Plato and Aristotle has been recognised for what it is are we able to appreciate that matter defined as `non-being' is not therefore `non-existent', and that the `privation' that is matter is not a terminus a quo of change, but a permanent substrate of change. The adaptation and the daring syncretism lead to deliberate paradox in Plotinus' own definition of matter as both `so to speak a form of sorts' and `formless' (I 8 [51] 3). The seeming inconsistency is Plotinus' acknowledgment of the use he has made of earlier ideas when he writes of matter, so defined, as `made' by a lower manifestation of soul, and therefore as the last and the least of the products flowing from, but not created by, the One. (shrink)

Aristotle and Theophrastus are the two major sources for our knowledge of the atomist theory of weight.In theDe generatione et corruptioneAristotle argues that one atom may be hotter than another and that therefore the atoms cannot be impassible, since an atom which is only slightly hot could not fail to be acted upon by an atom that was very much hotter. The premiss to the argument Aristotle derives in part from a comparison with weight. It would be ridiculous, he claims, (...) to suppose that hotness and coldness belong to the atoms, but that heaviness and lightness, hardness and softness do not belong to them. And in fact, he continues, Democritus does claim that each of the ‘indivisibles’ is βαρύτερον…κατὰ τὴν ὑπεροχήν. Aristotle has already supposed that one kind of atom, a round atom, may be accounted as hot. The use of the comparative for weight Aristotle now takes to justify the use of the comparative for heat : from this there follows the argument that the atoms cannot be impassible. (shrink)

« La matière est-elle identique à l'altérilé ? » Plotin se pose cette question au commencement du dernier chapitre de son traité Sur la matière (Enn., II 4 [12] 16). « Plutôt non », répond-il. « Elle est en revanche identique à cette partie de l'altérité qui s'oppose aux êtres proprement dits. » En s'exprimant de la sorte, Plotin fait allusion à un passage du Sophiste (258 E 2-3). Son allusion suppose pourtant l'existence d'un texte qui n'est pas attesté dans (...) les manuscrits. Cette différence textuelle implique un changement fondamental de doctrine, dont les éditeurs modernes ne se sont pas avisés. (shrink)

Neste artigo pretendo mostrar a importância do conceito de razoável na teoria da justiça como equidade, de John Rawls e também, explicar o problema da razoabilidade nessa teoria. O ponto de partida será ressaltar a exigência de razoabilidade que é feita ao agente moral na justiça como equidade. Posteriormente, procurarei identificar algumas críticas a esse critério. Partirei da crítica formulada por Estlund a respeito do estreitamento do conceito de razoabilidade e a necessidade da verdade e das críticas estabelecidas por Timmons (...) e Gaus sobre a exigência demasiada e ineficaz da razoabilidade. O passo seguinte será tentar responder a essas críticas formuladas e, na parte final do texto, procurarei estipular um argumento a respeito de um tipo de responsabilidade moral razoável que pode estar contida na justiça como equidade. (shrink)

The cosmic cycle described in the surviving fragments of Empedocles' poem is the alternation, in endless succession, of Love and Strife. Dr O'Brien's book is primarily an analysis of this elaborate system. It seeks to determine the positions which Love and Strife occupy in the world at different times.

Recent attempts at giving meaning to Empedocles’ enigmatic metaphor of a ‘pathway’ and ‘summits’ suffer from weaknesses logical no less than philological. Contrary theses do not have to be contradictory. Does Empedocles express a preference for ‘summits’ as opposed to a ‘pathway’, or for a ‘pathway’ as opposed to ‘summits’? Very possibly neither. The context in which the two verses are quoted points rather to a graceful peroration. However many ‘summits’ there may have been on the way, the traveller has (...) to complete his journey. However many the fascinating topics Cleombrotus has spoken of, he has to know how to bring his speech, his ‘path of words’, to a successful conclusion. (shrink)

Empedocles' fr. 24 is known only from its quotation by Plutarch. The words as quoted leave themselves open to divergent interpretations. The context in Plutarch nonetheless holds out some hope of being able to decide which of the divergent interpretations would have matched the use that Empedocles himself made of the two verses in his poem.

Empedocles’ repeated description of his four “roots” or elements by the repetition of three seemingly simple words (αὐτά + ἐστίν + ταῦτα) has constantly defied explanation. If the verb is given a copulative function, the result appears to be a pointless tautology (“these things are themselves”). If it is given an existential value, the result is puzzlingly abstruse (“these things themselves are”). Translators therefore commonly opt for a loose paraphrase, where one word out of three is not translated at all (...) (αὐτά) and an adverb (“only”) is added, seemingly from nowhere (“only these things are”). The solution to the puzzle is to be found in Empedocles’ reaction to his older contemporary, Anaxagoras. Empedocles’ repeated description is a covert criticism of Anaxagoras’ curious claim that “in everything there is a part of everything”. (shrink)

Stobaeus records a placitum where Empedocles says that the world is destroyed by the domination in turn of Love and of Strife. The placitum makes perfectly good sense in the context of Empedocles' belief that Love and Strife produce, in turn, a non-cosmic state of total unity (Love) and of total separation (Strife). But for over two hundred years scholars have been unable to hear that simple message. Sturz (1805) emended the text so as to make it fit the non-cyclical (...) interpretation of Empedocles that he had taken over from the pages of Tiedemann (1791). When Diels included Stobaeus' text in his edition of Aetius, in the "Doxographi graeci" (1879), he failed to remove the emendation, although his own reconstruction of the chapter heading in Aetius made the emendation impossible. Twenty years later, Diels saw the light, and printed Stobaeus' placitum, unemended, in his "Poetarum philosophorum fragmenta" (1901) and in successive editions of his "Fragmente der Vorsokratiker" (from 1903 onwards). But Kranz resurrected the emendation in the "Nachträge" to his sixth edition of the "Fragmente der Vorsokratiker" (1951). The emended placitum is used again by Uvo Hölscher (1965) to support a non-cyclical interpretation of Empedocles and is repeated in the latest collection of the fragments and testimonia (Brad Inwood, 1992). Hölscher fails to appreciate that the text that he uses to support his reconstruction is merely Sturz's translation into Greek of the non-cyclical interpretation of Empedocles proposed by Tiedemann at the end of the eighteenth century. (shrink)