In this study, I attempt to shed light on whether some passages from the Platonic dialogue Cratylus that deal with language correspond to Karl Popper’s theory on the third world. Specifically, I attempt to prove that Plato’s third world contains both divine and human properties, something that is provided through language, that is, through the human rational and developing in objective terms construction. In the four subchapters of my study, I basically investigate the relationship between the thinking subject and the (...) noumenon as well as the role of the coiner of names and the dialectician with respect to the scientific foundation of the names. The most important conclusion drawn is that according to Plato these two are responsible for connecting a thinking subject with a noumenon by adding objective certainty to the meaning of everything is said. I also investigate how Plato’s archetypal Ideas could be considered to be the third world. (shrink)

Ao longo da Metafísica e dos tratados de filosofia natural, Aristóteles toma os organismos vivos como os exemplos paradigmáticos de οὐσίαι (substâncias) naturais. No entanto, além dos organismos vivos, em certas passagens o filósofo menciona, também, as partes dos viventes e os elementos como exemplos de substâncias. Contudo, em outras passagens, Aristóteles parece considerar que as partes dos seres vivos e os corpos elementares não representariam, genuinamente ou propriamente, entidades substanciais. Por outro lado, em nenhum momento, o filósofo parece indicar (...) expressamente os corpos homogêneos inanimados (metais e minerais), tratados no livro IV dos Meteorológicos, enquanto tipos de seres substanciais. Neste artigo, pretendo, então, examinar se as partes do vivente e os elementos poderiam, de fato, contar ou não como exemplares genuínos de substâncias naturais; e em que medida os corpos homogêneos inanimados, a despeito de não serem explicitamente citados na condição de entes substanciais, poderiam, a partir do exame de suas naturezas composicionais, sustentarem, de uma maneira estrita, o título de οὐσίαι naturais. (shrink)

The Protagoras is the touchstone of Socrates’ moral intellectualist stance. The position in a nutshell stipulates that the proper reevaluation of a desire is enough to neutralize it.[1] The implication of this position is that akrasia or weakness of will is not the result of desire (or fear for that matter) overpowering reason but is due to ignorance. -/- Socrates’ eliminativist position on weakness of will, however, flies in the face of the common-sense experience regarding akratic action and thus Aristotle (...) was at pains to render Socrates’ account of moral incontinence intelligible. The key improvement Aristotle makes to Socrates’s model is to underscore that the conditioning of the akratic’s body plays a critical role in determining the power of one’s appetites and, accordingly, the capacity of one to resist the temptations these appetites present for rational evaluation. As Aristotle puts it, “For the incontinent man is like the people who get drunk quickly and on little wine, i.e., on less than most people.” (1151a 3-4). Aristotle presents what I shall call a somatic paradigm (i.e. the drunkard analogy) in order to tackle the problem of akrasia and it is this somatic solution that marks a significant improvement over Socrates’s intellectualist or informational model or so the tradition tells us. -/- In this paper, I wish to push back on the above Aristotelian explanation. I argue that when one fully examines Socrates’ account of weakness of will that Aristotle’s solution is less effective than is traditionally thought. In fact, Socrates can bring Aristotle’s model into his own; just as Aristotle absorbs what is right about Socrates’s model, namely, that akratic action utilizes reason but to a limited degree, Socrates in Meno (77C-78A) develops his own somatic model of weakness of will that connects to the intellectualist paradigm of the Protagoras. To achieve this rapprochement between the two models, I zero in on the description provided by Socrates of those individuals who desire bad things knowing they are bad as “ill-starred” or “bad spirited” (κακοδαίμων ). The “bad-spirited” is the coward and, in contrast to Aristotle’s drunkard, becomes fearful quickly from little danger. This additional somatic component, when connected to Socrates’s position on akrasia in Protagoras adds a new twist to Socrates’s model in the following way: while no one wishes to be ill-starred such that more harm than good will befall one, one may become so as a result of the bad choices one knowingly makes. -/- -/- [1] “After him came Socrates, who spoke better and further about this subject, but even he was not successful. For he used to make the virtues into sciences, and this is impossible. For the sciences all involve reason, and reason is to be found in the intellectual part of the soul. So that all the virtues, according to him arise in the rational part of the soul. The result is that in making the virtues into sciences he is doing away with the nonrational part of the soul and is thereby doing away with passion and character…” (Aristotle, Magna Moralia 1.1. 1182 a15-26). (shrink)

The present study aims at understanding how Ethica Nicomachea V.6 relates to its preceding chapters, V.1-5. On the one hand, the interpreter wonders for what purpose Aristotle introduces a topic named ‘the civic just’ (to politikon dikaion) in V.6, since V.1-5 treats extensively of matters of justice in the city. On the other hand, the same text posits that there is a certain ‘just without qualification’ (to haplōs dikaion), which may or may not be the civic just itself; compared to (...) the just without qualification, other forms of just are so by similitude (kath’homoiteta). In attempting to clear the confusion around those two points, the present study proposes the following: (1) the civic just is the just without qualification insofar as it is the primordial form of the just, in which only humans who are cumulatively free, equals and self-sufficient have a share; (2) the description of the civic just recapitulates several aspects of the discussions of justice in V.1-5 – the laws, the kinds of equality, rule, the legal suit - because the civic just encompasses all the forms of just (dikaion) related to the virtues of universal justice (V.1) and partial justice (V.2-5); (3) the expression to politikon dikaion is introduced in V.6 in order to contrast everything treated in V.1-5 with the domestic just, to oikonomikon dikaion, mentioned for the first time in V.6; (4) the forms of the domestic just are just only by similitude with the civic just because justice loses density outside the civic sphere, a situation which can be explained by the shortcomings Aristotle ascribes to women, children and slaves in EN V.6 (lack either of freedom or equality or yet self-sufficiency) as well as in Politica I (varying degrees of defective deliberation and virtue). (shrink)

Este artigo investiga a possibilidade de questões morais possuírem a mesma natureza de ocorrências no mais das vezes (ὡς ἐπὶ τὸ πολύ) discutidas na Física, Metafísica e nos Analíticos, em contraste com as categorias de necessário sem mais e de acaso/acidente. Tal categoria (ὡς ἐπὶ τὸ πολύ) ora é aproximada daquilo que é necessário (necessidade sem mais), quando Aristóteles realça a exclusão do acaso/acidente da ciência, ora é afastada do necessário sem mais, quando busca especificar as diferenças entre essas categorias (...) em termos das conclusões passíveis de serem obtidas em silogismos de ambos os tipos. O que parece é que as ações decorrentes de um caráter formado são ὡς ἐπὶ τὸ πολύ, podendo ser compreendidas no registro de um necessário hipotético, dado que o caráter é como uma “segunda natureza” do agente. Se tal hipótese for correta, ações decorrentes de um caráter formado não possuiriam estatuto de abertura aos contrários. (shrink)

Most interpretations of Aristotle’s Posterior Analytics believe that the term ‘ameson’ is used to describe the principles or foundations of a given system of justification or explanation as epistemically prior to or more fundamental than the other propositions in the system. Epistemic readings (as I shall call them) arguably constitute a majority in the secondary literature. This predominant view has been challenged by Robin Smith (1986) and Michael Ferejohn (1994; 2013), who propose interpretations that should be classified as non-epistemic according (...) to the definition above. My aim in this article is purely negative. I intend to show that these non-epistemic interpretations are liable to serious objections and are in conflict with some important features of Aristotle’s theory of demonstration. (shrink)

This is another contribution to the unending controversy over the two Barbaras. My approach to the problem is hopefully quite new: I wish to view the issue through the prism of modal upgrading. Modal upgrading occurs when a subject term that has only been predicated of assertorically in the premises is predicated of apodictically either: i) in the conclusion of a given syllogism, or; ii) in some proposition that is derived from either the premises of the given syllogism alone or (...) the premises in combination with other propositions that do not refer to the proposition’s subject term. I call the proposition after it has been upgraded the upgraded proposition. When a conclusion is the upgraded proposition, it is obviously a different predicate being predicated than was predicated in the premises. Aristotle endorses this kind of upgrading; it is effectively what happens in any valid mixed modal syllogism when the minor premise is not apodictic (e.g., Barbara LXL). In other cases the upgraded proposition is not a conclusion but still follows from the premises alone. In these cases it is the same predicate being predicated in the upgraded proposition as in the premises, although the quantity of the propositions are different (one is universal, another particular). Aristotle rejects this kind of upgrading and takes its occurrence as sufficient to deny the validity of the given syllogism (e.g., Barbara XLL). I will describe a third type where both the predicate remains the same and the quantity of the proposition remains the same as in the premise, e.g., the upgrading of “All C are B” to “All C are necessarily B”. In these cases it will turn out that the upgraded proposition is not derived from the premises alone, or at least, not syllogistically from the premises alone. This kind of upgrading too is reason for denying the validity of any syllogism from which the upgraded proposition follows as a consequence. I will show that Barbara LXL entails this kind of modal upgrading and should be rejected for this reason. Armed with this notion of modal upgrading I want to attack the problem of the two Barbaras in Aristotle’s apodictic syllogistic. Aristotle himself endorses mixed modal Barbara when the major is necessary and the minor is assertoric, thereby endorsing the first kind of modal upgrading, but rejects Barbara when the minor is necessary and the major is assertoric on the grounds that it leads to the second kind of modal upgrading. Theophrastus endorses the peioram rule which rejects both Barbaras on the grounds that the conclusion can only be as strong as the weakest premise. Łukasiewicz endorses both Barbaras. I will argue that both Barbaras lead to unacceptable modal upgrading and should be taken to be invalid for that reason. Hence, I agree with Theophrastus about the two Barbaras; however, I do not endorse the peioram rule because I think that the negative mixed modal syllogisms generally avoid this problem and is mostly correct. (shrink)

I focus on the distinction between universal and particular knowledge or knowledge simpliciter in APr 2.21 and APo 1.1 as Aristotle’s explicit response to the paradox of the Meno. I attempt to derive a picture of Aristotle’s understanding of the philosophical problem underlying that paradox by asking what that problem would have to be in order for this distinction to make sense as a response to it. I consider two ways of taking the distinction, and argue that both point towards (...) a problem about deriving knowledge of particulars from knowledge of universals as the fundamental problem underlying Aristotle’s understanding of the Meno paradox. (shrink)

In this paper I discuss passage 403a10-16 from Aristotle’s De Anima. In this passage Aristotle deals with whether the soul could be separate from the body and presents an analogy with geometrical entities. This passage is highly obscure and it presents many textual difficulties. The interpretation I offer resolves the textual problems without requiring emendations to the text as many commentators suggest.

This essay argues that Callicles is depicted by Plato in the Gorgias as a potential tyrant from a psychological standpoint. To this end I will contend that the Calliclean moral psychology sketched at 491e-492c points towards the analysis of the tyrannical individual pursued by Plato in books VIII and IX of the Republic based upon the tripartite theory of the soul. I will thereby attempt to show that (i) in the Gorgias, Callicles does not actually personify the ideal of the (...) superior person advocated by himself insofar as he is still susceptible to shame, as evinced by Socrates' cross-examination (494c-495a); and that (ii) looking forward to the Republic, he can be understood for this same reason as being precisely on the threshold between the democratic and the tyrannical soul. (shrink)

In a paper published in 1998, Ricardo Salles argues that the Stoic theory of action cannot account for practical knowledge, i.e., knowledge about what action is appropriate to be carried out in certain circumstances. The aim of this paper is to propose a solution to this problem. For this aim, I argue that the Stoics developed a perceptual theory of moral knowledge. According to this theory, the moral properties instantiated in objects, people, and actions are known through perception. After explaining (...) this theory, I argue that it allows us to show that the Stoics deemed perception as a source of practical knowledge. (shrink)

Regarding the famous Sea Battle Argument, which Aristotle presents in De Interpretatione 9, there has never been a general agreement not only about its correctness but also, and mainly, about what the argument really is. According to the most natural reading of the chapter, the argument appeals to a temporal concept of truth and concludes that not every statement is always either true or false. However, many of Aristotle’s followers and commentators have not adopted this reading. I believe that it (...) has faced so much resistance for reasons of hermeneutic charity: denying the law of universal bivalence seems to be overly disruptive to logical orthodoxy – the kind of logical orthodoxy represented by what we now call classical propositional logic, much of which Aristotle clearly supports in many texts. I intend to show that the logical-semantic theses that the traditional reading finds in De Interpretatione 9 are much more conservative than they may seem to be at first glance. First, I will show that they complement, and do not contradict in any way, the orthodox definitions of the concepts of truth and statement that Aristotle advances in other texts. Second, by resorting in an anachronistic vein to concepts and methods peculiar to contemporary logic, I will show that a trivalent modal semantics conforming to those theses can be built for a standard formal language of the classical propositional calculus. It is remarkable that reasonable concepts of logical truth and logical consequence that may be defined on the basis of this trivalent modal semantics are coextensive with their orthodox counterparts, the concepts of tautology and tautological consequence of classical bivalent and extensional semantics. (shrink)

In the Symposium of Plato, Socrates reports that Diotima once described to him a process of initiation by which a lover rises from desiring one beautiful body to catching sight of what seems to be the Platonic form of beauty. Scholars have debated whether the lover is to make this ascent by a rational process or a non-rational one, or by both working either in concert or independently. This paper argues that love leads and guides a process in this initiation (...) that necessarily involves rational activity. No teaching is necessary or appropriate, so that the process is an example of learning without being taught. The philosophical insight that results is life-changing, but it does not amount to the kind of knowledge that would fully satisfy a Socratic seeker after knowledge. (shrink)