This paper seeks to elucidate the distinctive nature of the rational impression on its own terms, asking precisely what it means for the Stoics to define logikē phantasia as an impression whose content is expressible in language. I argue first that impression, generically, is direct and reflexive awareness of the world, the way animals get information about their surroundings. Then, that the rational impression, specifically, is inherently conceptual, inferential, and linguistic, i.e. thick with propositional content, the way humans receive incoming (...) information from the world. When we suspend certain contemporary assumptions about propositional content, the textual evidence can be taken at face value to reveal why, for the Stoics, rational impressions are called thoughts (noēseis) and how the Stoics’ novel semantic entities called lekta (roughly, the meanings of our words) depend on rational impressions for their subsistence. (shrink)

A review of Donald Robertson, How to Think Like a Roman Emperor: The Stoic Philosophy of Marcus Aurelius. St. Martin's Press, 2019.

ABSTRACT: In contemporary discussions of freedom in Stoic philosophy we often encounter the following assumptions: (i) the Stoics discussed the problem of free will and determinis; (ii) since in Stoic philosophy freedom of the will is in the end just an illusion, the Stoics took the freedom of the sage as a substitute for it and as the only true freedom; (iii) in the c. 500 years of live Stoic philosophical debate, the Stoics were largely (...) concerned with the same philosophical problems of freedom. In this paper I argue that (i) can be upheld only in a very restricted way; (ii) is altogether untenable; and regarding (iii), that, although there may have occurred little change in the Stoic philosophical position on freedom over the centuries, we can detect more than one transformation of the philosophical problems that were at the forefront of the discussion. Moreover, that all the conceptions and problems of freedom were linked to Stoic ethics, and that the differences between them become transparent when one considers their various roles in this context. (shrink)

This essay considers how ancient Stoic cosmopolitanism – roughly, the claim all human beings are members of the same “cosmopolis”, or universal city, and so are entitled to moral concern in virtue of possessing reason – informs Stoic thinking about how we ought to treat non-human entities in the environment. First, I will present the Stoic justification for the thesis that there are only rational members of the cosmopolis – and so that moral concern does not extend (...) to any non-human part of the natural world – and explore the foundations of these views in Stoic physics. Next, I will show that, like other anthropocentric theories, Stoic cosmopolitanism allows for environmental preservation and protection of non-human entities, so long as these activities ultimately benefit human beings. However, because the Stoics include the appreciation of natural beauty as a component of the happy life, this justification is not as feeble as it might seem. Humans are naturally set up to contemplate the order and complexity of the universe, and so environmental degradation and species loss, in marring this harmonious system, frustrates the achievement of the human goal. After exploring these facets of Stoic philosophy, and assessing to what extent they might justify environmental conservation, I close with a critical appraisal of Stoic theory – specifically, of the claims that (i) only humans possess reason and (ii) only rational creatures are deserving of moral concern. (shrink)

This paper is a discussion of Gabriel, Hülser and Schlotter’s 2009 article on a possible causal relation between Stoic logic and Frege. The paper provides detailed argument for why Rudolf Hirzel should not be taken as the qualified middleman in philosophical discussion with whom Frege learned what he ‘borrowed’ without acknowledgement from Stoic logic. Additionally, this paper offers some modest findings about some aspects of Frege's and Hirzel's lives and work habits, which may help us understand a little (...) better Frege's connection to Hirzel and to Stoic logic as well as Frege’s failure to acknowledge the Stoics. This paper is a purely historical offshoot of my essay ‘Frege plagiarized the Stoics’. Zero direct insights into either Frege’s or Stoic philosophy are offered. OPEN ACCESS. Choose 'without proxy' below. (shrink)

On the one hand, Hume accepts the view -- which he attributes primarily to Stoicism -- that there exists a determinate best and happiest life for human beings, a way of life led by a figure whom Hume calls "the true philosopher." On the other hand, Hume accepts that view -- which he attributes to Scepticism -- that there exists a vast plurality of good and happy lives, each potentially equally choiceworthy. In this paper, I reconcile Hume's apparently conflicting commitments: (...) I argue that Hume's "Sceptical" pluralism about the character of the happiest life need not conflict with his "Stoic" advocacy of the supreme happiness of the true philosopher, given Hume's flexible understanding of how one might live as a true philosopher. (shrink)

ABSTRACT: For the Stoics, a syllogism is a formally valid argument; the primary function of their syllogistic is to establish such formal validity. Stoic syllogistic is a system of formal logic that relies on two types of argumental rules: (i) 5 rules (the accounts of the indemonstrables) which determine whether any given argument is an indemonstrable argument, i.e. an elementary syllogism the validity of which is not in need of further demonstration; (ii) one unary and three binary argumental rules (...) which establish the formal validity of non-indemonstrable arguments by analysing them in one or more steps into one or more indemonstrable arguments (cut type rules and antilogism). The function of these rules is to reduce given non-indemonstrable arguments to indemonstrable syllogisms. Moreover, the Stoic method of deduction differs from standard modern ones in that the direction is reversed (similar to tableau methods). The Stoic system may hence be called an argumental reductive system of deduction. In this paper, a reconstruction of this system of logic is presented, and similarities to relevance logic are pointed out. (shrink)

ABSTRACT: An introduction to Stoic logic. Stoic logic can in many respects be regarded as a fore-runner of modern propositional logic. I discuss: 1. the Stoic notion of sayables or meanings (lekta); the Stoic assertibles (axiomata) and their similarities and differences to modern propositions; the time-dependency of their truth; 2.-3. assertibles with demonstratives and quantified assertibles and their truth-conditions; truth-functionality of negations and conjunctions; non-truth-functionality of disjunctions and conditionals; language regimentation and ‘bracketing’ devices; Stoic basic (...) principles of propositional logic; 4. Stoic modal logic; 5. Stoic theory of arguments: two premisses requirement; validity and soundness; 6. Stoic syllogistic or theory of formally valid arguments: a reconstruction of the Stoic deductive system, which consisted of accounts of five types of indemonstrable syllogisms, which function as nullary argumental rules that identify indemonstrables or axioms of the system, and four deductive rules (themata) by which certain complex arguments can be reduced to indemonstrables and thus shown to be formally valid themselves; 7. arguments that were considered as non-syllogistically valid (subsyllogistic and unmethodically concluding arguments). Their validity was explained by recourse to formally valid arguments. (shrink)

The Stoics have often been compared to the earthborn Giants in the Battle of Gods and Giants in Plato’s Sophist, but with diverging opinions about the lessons they drew in reaction to Plato. At issue are questions about what in the Sophist the Stoics were reacting to, how the Stoics are like and unlike the Giants, the status of being for the Stoics, and the extent to which they were Platonizing with their incorporeals. With these open questions in mind, I (...) reexamine the Sophist from the Stoic perspective, finding eight distinct challenges that are likely to have been salient to the Stoics, and offer a new account of the Stoics as responding to these challenges with an innovative ontology that prises apart something from being to make room for what is not, and a sophisticated one-world metaphysics that grounds everything there is in two fundamental bodies. (shrink)

This paper examines the Stoic account of apprehension (κατάληψις) (a cognitive achievement similar to how we typically view knowledge). Following a seminal article by Michael Frede (1983), it is widely thought that the Stoics maintained a purely externalist causal account of apprehension wherein one may apprehend only if one stands in an appropriate causal relation to the object apprehended. An important but unanswered challenge to this view has been offered by David Sedley (2002) who offers reasons to suppose that (...) the Stoics (or at least Zeno, the founder of the Stoa) did not make such a causal stipulation. I offer a defence of the traditional, causal reading against the challenges raised by Sedley but also argue, against the traditional view, that the Stoic account incorporated an internalist element. On the hybrid account defended here, in order to apprehend not only must the agent stand in an appropriate causal relation to the object apprehended but the agent’s appearance of the object must also be clear (a feature which is accessible to the epistemic agent). The traditional scholarly view rejects internalist interpretations because it is thought that such interpretations cannot make sense of the Stoics’ discussion of the ‘automatic assent’ produced by kataleptic appearances and a purely externalist view is taken to be charitable insofar as it saves the Stoics from a vicious regress which they would otherwise face (were they internalists). I spell out how the regress might be taken to function and defend an internalist interpretation against both these charges. The internalist element embraced by the Stoics does not lead to the problems it is often thought to and the account defended here not only does justice to the textual evidence but also sheds light on the Stoic debates with their sceptical opponents and grants the Stoics an epistemic account fit for purpose. (shrink)

This paper contends that Stoic logic (i.e. Stoic analysis) deserves more attention from contemporary logicians. It sets out how, compared with contemporary propositional calculi, Stoic analysis is closest to methods of backward proof search for Gentzen-inspired substructural sequent logics, as they have been developed in logic programming and structural proof theory, and produces its proof search calculus in tree form. It shows how multiple similarities to Gentzen sequent systems combine with intriguing dissimilarities that may enrich contemporary discussion. (...) Much of Stoic logic appears surprisingly modern: a recursively formulated syntax with some truth-functional propositional operators; analogues to cut rules, axiom schemata and Gentzen’s negation-introduction rules; an implicit variable-sharing principle and deliberate rejection of Thinning and avoidance of paradoxes of implication. These latter features mark the system out as a relevance logic, where the absence of duals for its left and right introduction rules puts it in the vicinity of McCall’s connexive logic. Methodologically, the choice of meticulously formulated meta-logical rules in lieu of axiom and inference schemata absorbs some structural rules and results in an economical, precise and elegant system that values decidability over completeness. (shrink)

An overview of the ancient philosophers and their philosophical system (divided into the fields of logic, physics, and ethics) comprising the living, organic, enduring, and evolving body of interrelated ideas identifiable as the Stoic perspective.

How did the Stoics conceive of a polis and statehood? What happens when these ideas meet different biographies and changing historical environments? To answer these questions, 'The Stoics and the State' combines close philological reading of original source texts and fine-grained conceptual analysis with wide-ranging contextualisation, which is both thematic and diachronic. A systematic account elucidates extant definitions, aspects of statehood (territory, institutions, population and state objectives) and the constitutive function of the common law. The book’s diachronic part investigates how (...) Stoics from Zeno to Marcus Aurelius used their theory of the state to assess particular states, explain the origin of political communities and shape their own political practice. A glimpse at modern adaptations from Justus Lipsius to Martha C. Nussbaum explains the peculiarities of Stoic notions and their basis in a conception of human nature as not only political but essentially sociable and beneficent. (shrink)

This paper explores how to deliberate about food choices from a Stoic perspective informed by the value of environmental sustainability. This perspective is reconstructed from both ancient and contemporary sources of Stoic philosophy. An account of what the Stoic goal of “living in agreement with Nature” would amount to in dietary practice is presented. Given ecological facts about food production, an argument is made that Stoic virtue made manifest as wisdom, justice, courage, and temperance compel (...) Stoic practitioners to select locally sourced, low resource input, plant-based foods whenever circumstances allow. (shrink)

Cheney’s claim that there is a subtextual affinity between ancient Stoicism and deep ecology is historically unfounded, conceptually unsupported, and misguided from a scholarly viewpoint. His criticisms of Stoic thought are thus merely ad hominem diatribe. A proper examination of the central ideas of Stoic ethics reveals the coherence and insightfulness of Stoic naturalism and rationalism. These Stoic concepts fit well with a rational social ecology (like Murray Bookchin's) which is sensitive to the unique capacities and (...) unique responsibilities of human beings. (shrink)

This chapter investigates the Stoic understanding of impressions, assent, opinion, scientific knowledge, and cognition. By analyzing these concepts, I describe one major difference between the wise Stoic sage and unwise people: the wise person is capable of scientific knowledge and strong assent, while the rest of us are not. I will also interpret the Stoic account of the cognitive impression and describe several ways that the student of Stoicism might make epistemic progress.

For anyone approaching the Encheiridion of Epictetus for the first time, this book provides a comprehensive guide to understanding a complex philosophical text. Including a full translation and clear explanatory commentaries, Epictetus's 'Encheiridion' introduces readers to a hugely influential work of Stoic philosophy. Scott Aikin and William O. Stephens unravel the core themes of Stoic ethics found within this ancient handbook. Focusing on the core themes of self-control, seeing things as they are, living according to nature, owning (...) one's roles and fulfilling the responsibilities that those roles entail, the authors elucidate the extremely challenging ideas in Epictetus's brisk chapters. Divided into five distinct parts, this book provides readers with: -/- - A new translation of the Encheiridion by William O. Stephens. - A new introduction to ancient Stoicism, its system of concepts, and the ancient figures who shaped it. - A fresh treatment of the notorious and counter-intuitive 'Stoic paradoxes'. - An accessible overview of the origin and historical context of the Encheiridion. - Detailed commentaries on each chapter of the Encheiridion that clarify its recurring themes and highlight their interconnections. - Careful attention to the presentation of the arguments embedded in Epictetus's aphoristic style. - A thoughtful discussion of serious criticisms of Epictetus's Stoicism and replies to these objections. -/- Written with clarity and authority, Epictetus's 'Encheiridion' provides a foundation from which readers can understand this important text and engage with the fundamental questions of Stoic philosophy and ethics. This guide will aid teachers of Epictetus, students encountering Stoicism for the first time, and readers seeking a greater understanding of Stoic ethics. (shrink)

My project examines the pedagogical approach of the Stoic Epictetus by focusing on seven vital lessons he imparts. This study will deepen our understanding of his vocation as a Stoic educator striving to free his students from the fears and foolishness that hold happiness hostage. These lessons are (1) how freedom, integrity, self-respect, and happiness interrelate; (2) real versus fake tragedy and real versus fake heroism; (3) the instructive roles that various animals play in Stoic education; (4) (...) athleticism, sport, and game-playing as analogies for striving to live virtuously; (5) place, time, and progress in the journey to self-realization; (6) how to live with death and exit life fearlessly; (7) how teaching wisdom is one of several ways the Stoic sage loves others. (shrink)

In this extended essay, I argue that Frege plagiarized the Stoics --and I mean exactly that-- on a large scale in his work on the philosophy of logic and language as written mainly between 1890 and his death in 1925 (much of which published posthumously) and possibly earlier. I use ‘plagiarize' (or 'plagiarise’) merely as a descriptive term. The essay is not concerned with finger pointing or casting moral judgement. The point is rather to demonstrate carefully by means of (...) detailed evidence that there are numerous (over a hundred) and extensive parallels both in formulation and --more importantly-- in content between the Stoics and Frege, parallels so plentiful that one would be hard pressed to brush them off as coincidence. These parallels include several that appear to occur in no other modern works that were published before Frege’s own and were accessible to him. Additionally, a cluster of corroborating historical data is adduced to support the suggestion, showing how easy it would have to been for Frege to plagiarize the Stoics. This (first) part of the essay is easy to read and vaguely entertaining, or so I hope. -/- (Corrigendum: At school, Frege likely had seven, not ten, years of intensive Latin and four years of intensive ancient Greek courses.). (shrink)

The Acceptance of the Stoic Thesis on Affections (Pathē) -/- In this paper, I argue that the Stoic claim that one should strive towards having no affections (pathē) is a plausible and, moreover, true claim given the context of the Stoic thesis on affections (pathē) in relationship to their philosophy of the ultimate goal (telos) of life. Given the conception of affections (pathē) that the Stoics intended, the irrefutability that one should strive towards having no affections (...) (pathē) is found in the Stoic conception of impulse (hormē) and of value (namely how affections (pathē) lack value). Further, in the Stoic philosophy, there is identification of goods, bads and indifferents, which is an important contributing factor to the plausibility of the thesis. Taken together, these lead to the coherent acceptance of the Stoic thesis on affections (pathē), specifically that the allowance of affections (pathē) should be avoided. (shrink)

Chrysippus often talks as if there is a third option when we might expect that two options in response to a question are exhaustive. Things are true, false or neither; equal, unequal, or neither; the same, different, or neither.. and so on. There seems to be a general pattern here that calls for a general explanation. This paper offers a general explanation of this pattern, preserving Stoic commitments to excluded middle and bivalence, arguing that Chrysippus employs this trichotomy move (...) when he wishes to argue that apparent contradictories are only contraries, and wishes to endorse a third option. This general explanation of the pattern of trichotomies sheds light on a number of interpretive puzzles, including on Chrysippus's response to the paradox of the cone. The purpose of these trichotomies is also discussed, and it is suggested that they originate from the dialectical context in which philosophical problems were posed. (shrink)

ABSTRACT: A detailed presentation of Stoic theory of arguments, including truth-value changes of arguments, Stoic syllogistic, Stoic indemonstrable arguments, Stoic inference rules (themata), including cut rules and antilogism, argumental deduction, elements of relevance logic in Stoic syllogistic, the question of completeness of Stoic logic, Stoic arguments valid in the specific sense, e.g. "Dio says it is day. But Dio speaks truly. Therefore it is day." A more formal and more detailed account of the (...) Stoic theory of deduction can be found in S. Bobzien, Stoic Syllogistic, OSAP 1996. (shrink)

The Stoics claim that the sage is free from emotions, experiencing instead εὐπάθειαι (‘good feelings’). It is, however, unclear whether the sage experiences εὐπάθειαι about virtue/vice only, indifferents only, or both. Here, I argue that εὐπάθειαι are exclusively about virtue/vice by showing that this reading alone accommodates the Stoic claim that there is not a εὐπάθειαι corresponding to emotional pain. I close by considering the consequences of this view for the coherence and viability of Stoic ethics.

Students of Stoic philosophy, especially of Stoic ethics, have a lot to swallow. Virtues and emotions are bodies; virtue is the only good, and constitutes happiness, while vice is the only evil; emotions are judgements ; all sins are equal; and everyone bar the sage is mad, bad and dangerous to know. Non-Stoics in antiquity seem for the most part to find these doctrines as bizarre as we do. Their own philosophical or ideological perspectives, and the criticisms (...) of the Stoa to which these gave rise, are no less open to criticism than are the paradoxes and puzzles under attack – but they may be, often are, better documented, less provocatively attention-begging, or simply more familiar. Even disputes within the Stoa can be obscured or distorted by modern prejudices. Posidonius rejected Chrysippus' theory of a unitary soul, one rational through and through, on the grounds that such a theory could not satisfactorily account for the genesis of bad – excessive and irrational – emotions, the πάθη . Posidonius' own Platonising, tripartite soul feels more familiar to us because the Republic tends to be a set text rather more often than do the fragments of Chrysippus' de anima; and the balance in Plato's favour is unlikely to change. When Posidonius wrote, on the other hand, the Chrysippean soul was school orthodoxy, and Platonism the latest thing in radical chic. (shrink)

This paper examines an ancient debate over the rationality of perception. What leads the Stoics to affirm, and the Epicureans to deny, that to form a sense-impression is an activity of reason? The answer, we argue, lies in a disagreement over what is required for epistemic success. For the Stoics, epistemic success consists in believing the right propositions, and only rational states, in virtue of their predicational structure, put us in touch with propositions. Since they identify some sense-impressions as criteria (...) of truth and thus as the basis for epistemic success, the Stoics maintain that sense-impressions must be rational. The Epicureans agree with the Stoics that sense-impressions function as criteria of truth, and also agree broadly on what it means for a state to be rational, but deny that sense-impressions are rational because (1) they think that epistemic success must be supported by a state that is necessarily error-free and (2) accept that rational states can be false. In reconstructing this debate, we refine the standard interpretation of the fundamental difference between Epicurean and Stoic epistemology and also develop parallels with epistemological debates today. One upshot is a more nuanced appreciation of the merits of Epicurean epistemology vis-à-vis the Stoics. (shrink)

This paper raises obvious questions undermining any residual confidence in Mates work and revealing our embarrassing ignorance of true nature of Stoic deduction. It was inspired by the challenging exploratory work of JOSIAH GOULD.

Since Mates’ seminal Stoic Logic there has been uncertainty and debate about how to treat the term anapodeiktos when used of Stoic syllogisms. This paper argues that the customary translation of anapodeiktos by ‘indemonstrable’ is accurate, and it explains why this is so. At the heart of the explanation is an argument that, contrary to what is commonly assumed, indemonstrability is rooted in the generic account of the Stoic epistemic notion of demonstration. Some minor insights into (...) class='Hi'>Stoic logic ensue. (shrink)

The kinship between Stoic and Kantian thought, particularly in ethics, is often observed. Yet there has been rather little dedicated scholarship on the significance of Stoic ethics for the development of Kant's philosophy. The volume brings leading Kant scholars and ancient philosophy specialists together to tackle the question.

What can Stoicism offer to contemporary debates about forgiveness? Given their outright rejection of a reactive attitudes framework for responding to wrongdoing and their bold suggestions of how to revise our moral practices, the Stoics provide a valuable lens through which to re-evaluate various central claims in the debates about forgiveness. In this chapter, I highlight four common assumptions that the Stoics would consider problematic: firstly, that forgiveness is opposed to justice; secondly, that anger and resentment are necessary for registering (...) wrongdoing; thirdly, that anger and resentment are generally reliable at tracking the severity of wrongdoing; fourthly, that reconciliation with wrongdoers is an option rather than an imperative of virtue. Insofar as the Stoics provide defensible and often compelling alternatives to these positions, Stoicism offers a number of philosophical resources to re-conceptualize the way we think about forgiveness and suggests ways in which forgiveness might be better integrated into a virtue ethical framework. (shrink)

ABSTRACT: The 3rd BCE Stoic logician "Chrysippus says that the number of conjunctions constructible from ten propositions exceeds one million. Hipparchus refuted this, demonstrating that the affirmative encompasses 103,049 conjunctions and the negative 310,952." After laying dormant for over 2000 years, the numbers in this Plutarch passage were recently identified as the 10th (and a derivative of the 11th) Schröder number, and F. Acerbi showed how the 2nd BCE astronomer Hipparchus could have calculated them. What remained unexplained is why (...) Hipparchus’ logic differed from Stoic logic, and consequently, whether Hipparchus actually refuted Chrysippus. This paper closes these explanatory gaps. (1) I reconstruct Hipparchus’ notions of conjunction and negation, and show how they differ from Stoic logic. (2) Based on evidence from Stoic logic, I reconstruct Chrysippus’ calculations, thereby (a) showing that Chrysippus’ claim of over a million conjunctions was correct; and (b) shedding new light on Stoic logic and – possibly – on 3rd century BCE combinatorics. (3) Using evidence about the developments in logic from the 3rd to the 2nd centuries, including the amalgamation of Peripatetic and Stoic theories, I explain why Hipparchus, in his calculations, used the logical notions he did, and why he may have thought they were Stoic. OPEN ACCESS LINK. (shrink)

It is very difficult to get a clear picture of how the Stoic is supposed to deliberate. This paper considers a number of possible pictures, which cover such a wide range of options that some look Kantian and others utilitarian. Each has some textual support but is also unworkable in certain ways: there seem to be genuine and unresolved conflicts at the heart of Stoic ethics. And these are apparently due not to developmental changes within the school, but (...) to the Stoics’ having adopted implicitly incompatible solutions in response to different philosophical challenges. (shrink)

This comparative examination of Nietzsche and the Islamic philosopher al-Kindi emphasizes their mutual commitment to the recovery of classical Greek and Hellenistic thought and the idea of philosophy as a way of life. Affiliating both thinkers with the Stoic lineage in particular, I examine the ways in which they appropriate common themes such as fatalism, self-cultivation via spiritual exercises, and the banishing of sorrow. Focusing primarily on their respective conceptions of self and nature, I argue that the antipodal (...) worldviews of al-Kindi and Nietzsche can be understood as a bifurcation of Stoic philosophy. (shrink)

ABSTRACT: A detailed presentation of Stoic logic, part one, including their theories of propositions (or assertibles, Greek: axiomata), demonstratives, temporal truth, simple propositions, non-simple propositions(conjunction, disjunction, conditional), quantified propositions, logical truths, modal logic, and general theory of arguments (including definition, validity, soundness, classification of invalid arguments).

I examine the significance of the Stoic theory of pathē for Kant’s moral psychology, arguing against the received view that systematic differences block the possibility of Kant’s drawing anything more than rhetoric from his Stoic sources. More particularly, I take on the chronically underexamined assumption that Kant is committed to a psychological dualism in the tradition of Plato and Aristotle, positing distinct rational and nonrational elements of human mentality. By contrast, Stoics take the mentality of an adult human (...) being to be rational through and through, while recognising that this rationality is not normally in a state of health or excellence. I show how Kant’s account of affections—chiefly the “affects” and “passions” that he identifies as targets of a duty of apathy—draws substantive lessons from his Stoic sources, and how he accepts on his own terms the monistic principles of Stoic moral psychology. (shrink)

At Varro LL VI.56 and SE M 8.275-276, we find reports of the Stoic view that children and articulate non-rational animals such as parrots cannot genuinely speak. Absent from these testimonia is the peculiar case of the superficiality of the actor’s speech, which appears in one edition of the unstable text of PHerc 307.9 containing fragments of Chrysippus’ Logical Investigations. Commentators who include this edition of the text in their discussions of the Stoic theory of speech do not (...) offer a univocal account of the superficiality of the parrot’s, the child’s, and the actor’s speech. In this paper, I offer a reconstruction of the Stoic account of genuine and superficial speech and show that not only is there an account of superficial speech that univocally explains the superficiality of the speech of parrots, children, and actors, but that this account challenges traditional assumptions about the entities at the heart of the Stoic theory of language—lekta. It will turn out that genuine speech is the expression of a lekton by way of performing a speech act, and that this account of superficial speech can be used to explain other linguistic phenomena that are of interest to the Stoics, such as sentences in insoluble sophisms and sentences containing demonstratives that do not refer to anything in the subject term. Importantly, my reconstruction shows, against the near consensus view of lekta, that lekta do not primarily explain what makes an utterance meaningful. Rather, they primarily explain what makes an utterance an instance of genuine speech. (shrink)

In 1966 Gene Roddenberry, then a relatively unknown TV writer, created what was to become a cultural sensation. From cell phones and tablets, to MRI machines and medical jet injectors, Star Trek has undoubtedly anticipated much of the technology that we take for granted today. Moreover, the disagreements, fights and jokes between Captain Kirk (William Shatner), Dr Leonard ‘Bones’ McCoy (DeForest Kelley) and Mr Spock (Leonard Nimoy) were expertly crafted for dramatic impact. But I’m not writing this to confess to (...) you my obsessive infatuation with the Star Trek universe. Instead I want to discuss how the beliefs and practices of Vulcans like Spock are similar to those of the Stoic school of philosophy. (shrink)

This very brief paperli provides plausible answers to the two residual questions that Jamie Tappenden states, but leaves unanswered, in his 2024 paper ‘Following Bobzien: Some notes on Frege’s development and engagement with his environment’, namely, why Frege read Sigwart’s Logik and what caused Frege to read Prantl. (This paperli is merely historical and offers no special philosophical insights of any sort.) ---------- OPEN ACCESS. Choose 'without proxy' below.

This paper traces how the dualism of body and soul, cosmic and human, is bridged in philosophical and religious traditions through appeal to the notion of ‘breath’ (πνεῦμα). It pursues this project by way of a genealogy of pneumatic cosmology and anthropology, covering a wide range of sources, including the Pythagoreans of the fifth century BCE (in particular, Philolaus of Croton); the Stoics of the third and second centuries BCE (especially Posidonius); the Jews writing in Hellenistic Alexandria in the first (...) century BCE (Philo); and the Christians of the first century CE (the gospel writers and Paul). Starting from the early Pythagoreans, ‘breath’ and ‘breathing’ function to draw analogies between cosmogony and anthropogony – a notion ultimately rejected by Plato in the Timaeus and Aristotle in his cosmological works, but taken up by the Posidonius (perhaps following the early Stoa) and expanded into a rich and challenging corporeal metaphysics. Similarly, the Post-Hellenistic philosopher and biblical exegete Philo of Alexandria, who was deeply influenced by both Platonist and Stoic physics, approaches the cosmogony and anthropogony described in Genesis (1:1–3 and 1:7) through Platonist-Stoic philosophy, in his attempt to provide a philosophically rigorous explanation for why Moses employed certain terms or phrases when writing his book of creation. Finally, the chapter sees a determined shift in the direction of rejecting pneumatic cosmology for a revised pneumatic anthropogony in the writings of the New Testament: by appeal to the ‘Holy Spirit’ or ‘Holy Breath’ (πνεῦμα ἅγιον), early Christians effectively adapted the Stoic metaphysics of ‘breath’, with its notions of divine intelligence and bonding, to the prophetic and ecclesiastical project of building a Christian community conceived of as the ‘body of Christ’. Hence, the spiritual cosmogony of the Pythagoreans, Stoics, and Philo is effectively subordinated to the spiritual anthropogony that facilitates the construction of the Christian kosmopolis, only fully realised in the form of New Jerusalem, the ‘bride’ which, in tandem with the Holy Spirit, calls to the anointed. At the end of the Christian worldview, the kosmos of Greek philosophy is supplanted by the pneumatic kosmopolis. (shrink)

This paper offers a theoretical framework that can be used to derive viable engineering strategies for the design and development of robots that can nudge people towards moral improvement. The framework relies on research in developmental psychology and insights from Stoic ethics. Stoicism recommends contemplative practices that over time help one develop dispositions to behave in ways that improve the functioning of mechanisms that are constitutive of moral cognition. Robots can nudge individuals towards these practices and can therefore help (...) develop the dispositions to, for example, extend concern to others, avoid parochialism, etc. (shrink)

This has been available under Teaching Materials, but items in that category are not easily located, so I have added it here. This short dialogue can be used to introduce students to the core claims of Stoic moral philosophy and to position Stoic moral philosophy in relation to its ancient alternatives: Cynicism, Epicureanism, and Peripatetic thought. The dialogue form is meant to make this fun and easy. -/- This little dialogue may also be of interest to (...) readers who have encountered various popular books on "How to Stoic". Such readers should know that Stoicism is a school of _philosophy_. The Stoics themselves would not recommend that you try to Stoic Yourself unless and until you were convinced of the _truth_ of the central claims of the school -- a truth that the ancient Stoics sought to establish by _arguments_. To treat Stoicism simply as self-help, without due regard to whether its central claims can be shown to be true, would be to treat those ancient philosophers with contempt. (shrink)

Kant’s account of “the radical evil in human nature” in the 1793 Religion within the Bounds of Reason Alone is typically interpreted as a reworking of the Augustinian doctrine of original sin. But Kant doesn’t talk about Augustine explicitly there, and if he is rehabilitating the doctrine of original sin, the result is not obviously Augustinian. Instead Kant talks about Stoic ethics in a pair of passages on either end of his account of radical evil, and leaves other clues (...) that his argument is a reworking of an old Stoic problem. “Radical evil” refers to the idea that our moral condition is — by default and yet by our own deed — bad or corrupt; and that this corruption is the root (radix) of human badness in all its variety, ubiquity, and sheer ordinariness. Kant takes as his premise a version of the Stoic idea that nature gives us “uncorrupted starting points” (Diogenes Laertius 7.89). What sense can be made of the origin of human badness, given such a premise? Kant’s account of radical evil is an answer to this old Stoic problem, which requires a conception of freedom that is not available in his Stoic sources. (shrink)

I show that in Epictetus’ view (1) the wise man genuinely loves (στέργειv) and is affectionate (φιλόστoργoς) to his family and friends; (2) only the Stoic wise man is, properly speaking, capable of loving—that is, he alone actually has the power to love; and (3) the Stoic wise man loves in a robustly rational way which excludes passionate, sexual, ‘erotic’ love (’έρως). In condemning all ’έρως as objectionable πάθoς Epictetus stands with Cicero and with the other Roman Stoics, (...) Seneca and Musonius Rufus, and against the Greeks of the early Stoa. Epictetus’ conception of love excludes erotic passion because of its intrinsic excessiveness and uncontrollableness, which inevitably endanger mental serenity, but includes and emphasizes the soberly rational, purely positive joy of interpersonal affiliation. Epictetus’ account of how the Stoic Sage loves is, I think, more consistent and less problematic than that of the Greek Stoics. (shrink)

Void is at the heart of Stoic metaphysics. As the incorporeal par excellence, being defined purely in terms of lacking body, it brings into sharp focus the Stoic commitment to non-existent Somethings. This article argues that Stoic void, far from rendering the Stoic system incoherent or merely ad hoc, in fact reflects a principled and coherent physicalism that sets the Stoics apart from their materialist predecessors and atomist neighbors.

In this paper I offer a new interpretation of Stoic ontology. I aim to explain the nature of, and relations between, (i) the fundamental items of their physics, bodies; (ii) the incorporeal items about which they theorized no less; and (iii) universals, towards which the Stoic attitude seems to be a bizarre mixture of realism and anti-realism. In the first half of the paper I provide a new model to explain the relationship between those items in (i) and (...) (ii). This model clears up several problems in Stoicism and gives a precise answer to the question of how bodies and incorporeals differ in their mode of being. The second half of the paper considers the vexed issue of the status of those items in (iii), Stoic universals. (shrink)

In this paper I aim to undermine Stoic and Neo-Stoic readings of Benedict de Spinoza by examining the latter’s strong agreements with Epicurus (a notable opponent of the Stoics) on the nature and ethical role of pleasure in living a happy life. Ultimately, I show that Spinoza and Epicurus are committed to three central claims which the Stoics reject: (1) pleasure holds a necessary connection to healthy natural being, (2) pleasure manifests healthy being through positive changes in state (...) and states of healthy being per se, and (3) pleasure is by nature good. The Stoics reject these three claims due to their views on pleasant sensations as preferred moral indifferents and passionate pleasures as diseases of the soul, views which Spinoza (due to the abovementioned commitments) is strongly opposed to, thereby placing him (at least on the subject of pleasure) outside the realm of merely following or improving on Stoic doctrines. From this comparative analysis we also gain deeper insight into both Spinoza’s engagement with ancient Greek philosophy and the value of Epicureanism and Spinozism in helping us achieve and maintain happiness in the present day, particularly with respect to the benefits and harms of bodily and mental pleasures. (shrink)

This is a study of Roman adaptations of Stoic doctrine that seeks to portray a model of the self functioning as a mediator between philosophical and traditional values (1). The author’s aim is ‘to let the Roman Stoics’ self arise out of a comprehensive analysis of their extant philosophical work and to conduct that analysis from the vantage point of the specific question of social embeddedness. Such an approach yields a Stoic self that is constituted by the encounter (...) between challenges and normative expectations’ (2). Overall, this aim is met. The Roman Stoics referred to are Seneca, Musonius Rufus, Epictetus, Marcus Aurelius, and to a lesser extent Hierocles, who ‘all had to come to terms with the sociopolitical challenges of imperial Rome’ (3). The tame thesis advanced is that the doctrine of these Roman Stoics ‘shows a distinctive pattern of emphasizing social responsibility’ (3). This social responsibility includes commitments to the political community, marriage, and parenthood. (shrink)

Our primary evidence for the contribution of Cleanthes, the second Stoic scholarch, to the school’s distinctive theory of cyclical ekpyrosis (conflagration) is limited to a single difficult passage found in Stobaeus attributed to Arius Didymus. Interpretations of this text have largely proceeded by emendation (von Arnim, Meerwaldt) or claims of misconstrual or misunderstanding (Hahm). In recent studies, Salles and Hensley have taken the passage at face value and reconstructed opposed interpretations of Cleanthes’ position. The former suggests that it differs (...) significantly from that of Zeno and Chrysippus. Both the sequence of elemental transformation and its scope are said to be challenged by Cleanthes, suggesting cosmogony was a deeply controversial area in the early Stoa. I resist this interpretation of the evidence while also attempting to read the text without textual correction. Hensley, on the other hand, finds all three to be in strict harmony. Here I advocate for a middle ground where Cleanthes is closer to the positions of both Zeno and Chrysippus, but I also find room for his development of Stoic cosmogony as composed of a series of discrete stages radiating outwards from the middle. We are left with a clearer, more nuanced picture of how Stoic natural philosophy develops in its early period. (shrink)