The wider topic to which the content of this paper belongs is that of the relationship between formal logic and real argumentation. Of particular potential interest in this connection are held to be substantive arguments constructed by philosophers reputed equally as authorities in logical theory. A number of characteristics are tentatively indicated by the author as likely to be encountered in such arguments. The discussion centers afterwards, by way of specification, on a remarkable piece of argument quoted in Cicero’s dialog (...) On Divination and ascribed to Stoic thinkers. The Stoics’ formal theory of inference is summarily referred to in this context, with special emphasis on their basic deductive schemata (‘indemonstrables’), some of them recognizable as links in the overall structure of the quoted argument. The main lines of Cicero’s criticism of the Stoic argument are next commented upon, with emphasis on his implied view as to the requirements of a good argument. Towards the end of the paper, a few considerations are added on the changes in the prevailing style of argumentation conspicuous in the three famous Roman Stoics. (shrink)

ABSTRACT: Alexander of Aphrodisias’ commentaries on Aristotle’s Organon are valuable sources for both Stoic and early Peripatetic logic, and have often been used as such – in particular for early Peripatetic hypothetical syllogistic and Stoic propositional logic. By contrast, this paper explores the role Alexander himself played in the development and transmission of those theories. There are three areas in particular where he seems to have made a difference: First, he drew a connection between certain passages from Aristotle’s (...) Topics and Prior Analytics and the Stoic indemonstrable arguments, and, based on this connection, appropriated at least four kinds of Stoic indemonstrables as Aristotelian. Second, he developed and made use of a specifically Peripatetic terminology in which to describe and discuss those arguments – which facilitated the integration of the indemonstrables into Peripatetic logic. Third, he made some progress towards a solution to the problem of what place and interpretation the Stoic third indemonstrables should be given in a Peripatetic and Platonist setting. Overall, the picture emerges that Alexander persistently (if not always consistently) presented passages from Aristotle’s logical œuvre in a light that makes it appear as if Aristotle was in the possession of a Peripatetic correlate to the Stoic theory of indemonstrables. (shrink)

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)

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)

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)

This chapter contains sections titled: Introduction The Stoic Logical System Conclusion Bibliography.

_Perennial wisdom from one of history’s most important but lesser-known Stoic teachers__ “He knew that all a philosopher could do was respond well—bravely, boldly, patiently—to what life threw at us. That's what we should be doing now.”—Ryan Holiday, Reading List email_ The Stoic philosopher Musonius Rufus was one of the most influential teachers of his era, imperial Rome, and his message still resonates with startling clarity today. Alongside Stoics like Seneca, Epictetus, and Marcus Aurelius, he emphasized ethics in (...) action, displayed in all aspects of life. Merely learning philosophical doctrine and listening to lectures, they believed, will not do one any good unless one manages to interiorize the teachings and apply them to daily life. In Musonius Rufus’s words, “Philosophy is nothing else than to search out by reason what is right and proper and by deeds to put it into practice.” At a time of renewed interest in Stoicism, this collection of Musonius Rufus’s lectures and sayings, beautifully translated by Cora E. Lutz with an introduction by Gretchen Reydams-Schils, offers readers access to the thought of one of history’s most influential and remarkable Stoic thinkers. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Cambridge Companion to the StoicsJohn SellarsBrad Inwood, editor. The Cambridge Companion to the Stoics. New York: Cambridge University Press, 2003. Pp. ix + 438. Cloth, $70.00. Paper, $26.00.No doubt everyone will be familiar with the format and rationale of the Cambridge Companion series, each volume being designed to function as a "reference work for students and nonspecialists." Brad Inwood's Cambridge Companion to The Stoics follows the usual (...) plan, offering fifteen essays by an impressive line up of well-known Stoic scholars. The essays fall into four distinct groups. The first group (Sedley, Gill) offers a sketch of the history of the Stoa, and both essays are excellent. Of particular interest is Sedley's challenge to the traditional distinction between the orthodox "early" and eclectic "middle" Stoa (esp. 23-24). The second group (Hankinson, Bobzien, White, Algra, Frede, Brunschwig, Schofield, Brennan) forms the heart of the volume, each essay examining a central topic in Stoic philosophy. While all of these contributions are very good, those by Bobzien, Brunschwig, and Schofield stand out in particular. Hankinson offers a helpful discussion of Stoic epistemology but lapses into anachronistic descriptions at times; the Stoic position is "Lockean," the Stoics are good empiricists in the Humean fashion, they have "Leibnizian metaphysics" (63, 69). Brennan gives a very interesting discussion of Stoic moral psychology, but perhaps pitches it a little too high for a nonspecialist audience. The third group (Hankinson again, Blank and Atherton, Jones) explores the ancient Stoic tradition's relationship with medicine, grammar, and the astronomical sciences. Jones' discussion of the neglected Cleomedes is especially welcome (333-37). The final group (Irwin, Long) considers the reception of Stoic ideas in the Western intellectual tradition. Of these I found Long the more accessible and useful of the two (compare, for instance, their respective discussions of Butler, 357-62 and 382-89), although Irwin will no doubt prove stimulating to those already familiar with the issues he addresses.What is lacking from the collection as a whole, however, is any sense of the systematic unity of Stoic philosophy. While it has inevitably been divided up under various headings for the sake of exposition, there has not been much attempt to put it back together again (like Humpty Dumpty, Stoic philosophy is like an egg; Diogenes Laertius 7.40). Although many individual contributors signal the systematicity of Stoicism, there is no extended discussion of the way in which the various parts of Stoic philosophy fit together, nor how that system relates to the way in which the Stoics conceived philosophy, or their ideal of the Sage. [End Page 337]My principal concerns with the volume as a whole relate to the lack of any supporting material that might prove useful to the student or nonspecialist approaching the subject for the first time. There is no list or chronology of the principal Stoics, nor a guide to the ancient sources for Stoicism. There is a list of primary sources, but this contains all of the primary material cited by the contributors, including works by Aquinas, Butler, Duns Scotus, Hume, Leibniz, and Spinoza. There is no readily accessible table of abbreviations, and what nonspecialist will know that in order to find a text cited as 'S. E. M' they may end up opening a book entitled Against the Logicians (as 'M' 7 and 8 are called in the Loeb Classical Library series)? Some abbreviations are explained within the list of primary sources, but this is not immediately obvious. The bibliography is indeed substantial but it also simply lists the various items cited by the contributors. What might have been more useful in this companion is a structured guide to further reading, such as the one in A. S. McGrade's excellent Cambridge Companion to Medieval Philosophy, for instance. Even better would have been a bibliography along the lines of the one in Jonathan Barnes' Cambridge Companion to Aristotle. One other omission that is striking is the absence of a discussion of methodological problems that arise from relying on often hostile doxographical sources. Although a number of the contributors do touch on such issues en route, a more sustained treatment might have... (shrink)

Plotinus treats certain pre‑philosophical concepts as reliable or promising starting‑points for philosophical study. This article studies the way in which he, in the act of philosophizing, conceives of the passage from an unclear understanding, a kind of pre‑concept, to a better, philosophical conception. What are the sources of this passage? What is the role of data given by sense‑perception? In what way are innate conceptual and cognitive capacities involved? It will be argued that the methodology suggested is a Platonic version (...) of the Stoic appeal to common notions (koinai ennoia). Moreover, Plotinus seems to maintain several features of the empirical original. The concepts discussed are not primarily introspected or intuited, but seem to result from both experience and from innate tendencies. The bottom‑up approach of scrutinizing the combination of inquiries in the Enneads (and in a commentary of Proclus) and the methodological remarks made within these same inquiries, exposes, further, an interesting list of concepts significant for the Neoplatonic theory‑building : freedom, oneness, time and eternity, as well as good and evil. (shrink)

The first text of Justinian’s sixth century Digest records that Ulpian, the leading lawyer from Syria and counsellor to successive emperors of the Severan age (AD 193-235), related the term ‘law’ to four elements: art, religion, ethics and philosophy.2 Law is the art of the good and equitable, of which lawyers can well be called priests. They cultivate justice and the knowledge of right and wrong, and aim, unless Ulpian is mistaken, at the true philosophy.3 He goes on to say (...) that private law is collected from three sources: natural law,4 the law common to all communities (ius gentium) and the law specific to each community (civil law).5 Gaius, a generation earlier, listed two sources: the civil law of each community and the ius gentium.6 He recognized, however, the existence of natural law which, so far as performing a ‘natural obligation’ is concerned, cannot be changed by civil law.7 At times he identifies natural law with ius gentium. (shrink)

Theodore Waitz, in the section of his introduction to Aristotle's Organon called De Codicibus graecis organi, prints a number of passages found in various manuscripts, which are not to be treated simply as scholia on Aristotle, but are still of some interest to the student of Aristotle's logic. In this paper I am concerned with three leaves, fos. 84–6, from Laurentianus 71, 32, a fourteenth-century manuscript containing paraphrases of several works, which Waitz uses for scholia on the Categories and the (...) De Interpretatione. These leaves are in a different hand from the rest of the manuscript, and Waitz thinks they originated elsewhere. The heading is: Περ τς το ποτ κτηγορς, and the work falls into two parts, a discussion of Time, based on Physics 4, and an independent section in which the category of When, which Aristotle does little more than mention in a number of lists, is treated at length. In Waitz' text there are a number of references to scholia: these are in fact from Simplicius' Commentary on the Categories, and a comparison with these and still other passages of Simplicius not mentioned by Waitz suggests that the author of this work was Boethus of Sidon, the Peripatetic. I propose to examine it and argue that it is indeed by Boethus. Boethus, known as ‘the Peripatetic’, to distinguish him from the Stoic philosopher of the same name, was head of the Peripatos in succession to Andronicus of Rhodes. There is some uncertainty about Andronicus' dates, but he lived some time in the middle of the first century b.c. and we may place Boethus somewhat later in the same century. Andronicus is well known as the editor, and in a sense the rediscoverer, of the esoteric works of Aristotle; it is less well known that he had an independent attitude to Aristotle and put forward what he presumably thought of as some improvements in doctrine. What concerns us here is his attempt to substitute the category of Time for that of When. In opposition to him Boethus may be seen as a conservative, coming to the defence of Aristotle against these innovations. (shrink)

In this paper I defend the existence of a Dialectical school proper against criticisms brought forward by Klaus Döring and by Jonathan Barnes. Whereas Döring claims that there was no Dialectical school separate from the Megarians, Barnes takes issue with my claim (argued for in “Dialektiker und frühe Stoiker bei Sextus Empiricus”) that most of the reports in Sextus on the dialecticians refer to members of the Dialectical school. Barnes contends that these dialecticians are in fact Stoic logicians. As (...) against Döring, I argue that the passage in Diogenes Laertius II 113 (first drawn attention to by David Sedley) which talks of a the Megarian Stilpo winning over disciples from the Dialecticians is not refuted by Döring’s arguments. It clearly shows that the Dialecticians and the Megarians at the time were taken to be different philosophical sects. As against Barnes I insist on the differences between the report in Ps.-Galen’s Historia 9 and the Sextan report on the theory of sign in AM VIII. These reports offer incompatible definitions of the indicative sign. Moreover, the classification of simple propositions reported by Sextus at AM VIII 96f. cannot be a truncated version of the (Stoic) list to be found in Diogenes Laertius VII 69f. since in Sextus’ report one of the three classes of simple propositions is labelled middle (meson). This is a certain sign that we are dealing with a triad, and hence that this list is meant to be complete. Therefore the classification found in Sextus and attributed to the dialecticians and the one in Diogenes Laertius reporting Stoic material do come from different sources. (shrink)

Theodore Waitz, in the section of his introduction to Aristotle's Organon called De Codicibus graecis organi, prints a number of passages found in various manuscripts, which are not to be treated simply as scholia on Aristotle, but are still of some interest to the student of Aristotle's logic. In this paper I am concerned with three leaves, fos. 84–6, from Laurentianus 71, 32, a fourteenth-century manuscript containing paraphrases of several works, which Waitz uses for scholia on the Categories and the (...) De Interpretatione. These leaves are in a different hand from the rest of the manuscript, and Waitz thinks they originated elsewhere. The heading is: Περ τς το ποτ κτηγορς, and the work falls into two parts, a discussion of Time, based on Physics 4, and an independent section in which the category of When, which Aristotle does little more than mention in a number of lists, is treated at length. In Waitz' text there are a number of references to scholia: these are in fact from Simplicius' Commentary on the Categories, and a comparison with these and still other passages of Simplicius not mentioned by Waitz suggests that the author of this work was Boethus of Sidon, the Peripatetic. I propose to examine it and argue that it is indeed by Boethus. Boethus, known as ‘the Peripatetic’, to distinguish him from the Stoic philosopher of the same name, was head of the Peripatos in succession to Andronicus of Rhodes. There is some uncertainty about Andronicus' dates, but he lived some time in the middle of the first century b.c. and we may place Boethus somewhat later in the same century. Andronicus is well known as the editor, and in a sense the rediscoverer, of the esoteric works of Aristotle; it is less well known that he had an independent attitude to Aristotle and put forward what he presumably thought of as some improvements in doctrine. What concerns us here is his attempt to substitute the category of Time for that of When. In opposition to him Boethus may be seen as a conservative, coming to the defence of Aristotle against these innovations. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Skeptic Way: Sextus Empiricus’s “Outlines of Pyrrhonism.” by Benson MatesDavid K. GliddenBenson Mates. The Skeptic Way: Sextus Empiricus’s “Outlines of Pyrrhonism.” New York: Oxford University Press, 1996. Pp. x + 335. Cloth, $55.00, Paper, $22.95.Benson Mates’s translation and commentary of Sextus Empiricus’ Outlines of Pyrrhonism appears nearly half a century after Mates first began his pioneering work on Sextus and Hellenistic philosophy. This publication coincides with another (...) new translation of the Outlines by Annas and Barnes, who provide only an abbreviated commentary (Cambridge University Press, 1994). After decades when the only available English translation was by Bury from the Loeb, there are now choices available which allow Sextus to be taught to different sorts of English readers.In comparing the two translations, this reader found the Annas and Barnes version more mellifluous. Mates is not as sweet. His style is plain-spoken, but this approach has merits when the arguments get going. The Annas and Barnes version uses footnotes for commentary, along with a brief introduction. Their notes cite parallel passages in other works by Sextus, provide brief guidance for interpretation when it is most needed, and connect the reader with a focused list of bibliographical references, inviting readers themselves to turn toward scholarly debates over certain controversial passages. Consequently, Annas and Barnes opens out to a wide audience of classicists, historians, students of literature, general readers interested in scepticism, as well as philosophers of whatever ideology. [End Page 460]The Mates edition is directed toward philosophers alone. It is much less oriented toward historical scholarship, preferring to read Sextus as a contemporary professional philosopher might. In this way, Mates will approach a passage from the Outlines in terms of a passage in Hume or Berkeley, even though, of course, these latter-day philosophers derived their views from reading Sextus. Mates employs philosophese with ease, constructing a version of Sextus from the professional philosopher’s interpretive stance, in the language of propositions and Fregean intensions. The audience Mates is writing for and the viewpoint he is writing from more or less correspond to the “analytical” faction of the American Philosophical Association. Postmodern Foucaultians, contextualist historians, and Hellenistic scholars might find this approach unhelpful, even irritating. But busy, mainstream American philosophers could find Mates’s approach sufficiently sympathetic to actually read some Sextus, in the way Chisholm once had done, finding a passage on the Cyrenaics in Sextus which led to the reinvention of “adverbial appears locutions” and which, in turn, played for decades in the epistemological arcades.Mates begins his edition with a systematic introduction to the Outlines and follows his translation with another hundred pages of narrative, reflecting primarily what Mates finds interesting about certain selected passages. Although, like Annas and Barnes, he provides parallel passages, ancient references, and highly abbreviated accounts of scholarly disputes, his own narrative line dominates both his introductory essay and his commentary. Mates writes in a somewhat chatty style prone to the blunt Cephalean confidence that comes with considerable experience and success as a professional philosopher. His narrative line is clear, connected, often compelling, as for instance when he argues that for Sextus “dogmatizing and believing turn out to be one and the same” (61).Fashion has returned to favor Pyrrhonism in the late twentieth century, just as the cycle had come around before, toward the end of the sixteenth century, sparking a philosophical renaissance. This time around the import may be different. Both Annas and Barnes as well as Mates find Sextus worth reading as serious philosophy. This is a considerable improvement in the fortuna of the Outlines. For decades Sextus was banned in American philosophy departments, as no philosopher at all. He was not taught, he was not read. One highly prominent American philosopher was expressly forbidden to write a dissertation on him, around the time Mates and Chisholm had the courage to publish on him. Sextus is now welcome in the Canon.If Sextus now is one of us, a serious philosopher, then the dogmatists (Stoics, Epicureans, Peripatetics, etc.) he ridiculed were merely failures. The game continues. So, Mates, Annas and Barnes can embrace Sextus as ours. His readers won’t... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Possibility and Necessity in the Time of Peter Abelard by Irene BininiWolfgang LenzenIrene Binini. Possibility and Necessity in the Time of Peter Abelard. Investigating Medieval Philosophy Series. Leiden: Brill, 2021. Pp. xii + 326. Hardback, $166.00.This book is an impressive work written by a young Italian scholar who received her PhD only five years ago in Pisa. It is divided into three parts. Part 1 gives a survey (...) of "Early 12th-Century Debates on Modal Propositions"; part 2 is devoted to "Abelard's Modal Logic"; [End Page 327] part 3 deals with the views of "Abelard on the Metaphysics and Epistemology of Modalities." The author displays a profound knowledge of the relevant literature. The primary sources comprise twenty manuscripts preserved in various European libraries, plus forty-eight printed works (from Abelard to William of Sherwood). The list of secondary sources contains altogether 136 items from A (Astroh) to Z (Zagzebski), but, interestingly, it does not mention a monograph that, by its very title, claims to give an exposition of Abelard's logic, namely Maria Teresa Beonio-Brocchieri Fumagalli's La Logica di Abelardo (Firenze: La Nuova Italia, 1964).As far as I can judge (as a nonnative English-speaker), the linguistic quality of Binini's book is quite good. The explanations in the main text, including the translations from Latin sources, are easily comprehensible, and the many quotations (distributed over no less than 655 footnotes) are almost without any fault. Thus, the book rightly deserves inclusion in the prestigious series Investigating Medieval Philosophy. Yet, at least according to my taste, the book contains many redundancies. Again and again, the author first explains a certain issue at some length, then confirms the correctness of her interpretation by means of a longer (English) quotation, and finally reconfirms it by fully quoting the Latin text in the footnotes.As Binini explains in the book's concluding chapter, her aim is to present "an all-encompassing reflection on [Abelard's] works on modalities" and "a comparison between these works and the parallel reflections advanced by other masters and logicians in the early 12th century" (308). She undoubtedly achieves this goal. The comparison of Abelard's views on possibility and necessity with the views of other logicians is mainly carried out in chapters 1–3. Ancient and early medieval logicians such as, in particular, the Stoics and Boethius favored the basic idea that "something," p, is necessary if and only if p is always the case (or true). Accordingly, p is possible if and only if p is at least sometime the case. Abelard, however, was not willing to accept that each possibility has to become realized at some time. He instead offered a "nature-based characterization of possibility" that can "account for unrealized, past, counterfactual, and even unactualizable possibilities" (308). Abelard's idea is that something, x, is possibly a P if and only if the property of being P is compatible with the nature of x. Hence this view basically amounts to a de re conception of possibility that attributes modalities to things, while the temporal view attributes modal properties primarily to propositions (or states of affairs) and hence can be labeled de dicto (or de sensu).Let us now turn to Binini's twofold aim (as formulated on the back cover of her book) to present a "uniform and consistent" reassessment of Abelard's theory of modalities and of his modal logic. The former task is tackled in chapters 8–10. After summarizing, in chapter 8, Abelard's general views on "Nature and Modalities," chapter 9 is devoted to a detailed discussion of the "Many Senses of Possibility." In five consecutive sections, Binini investigates the conception of (1) possibility as "non-repugnancy with nature" (illustrated by the thesis that "any man can be a bishop" [235]); (2) unrealizable but "conceivable" possibilities (such as the existence of humans lacking the ability to laugh [240]); (3) determinate potencies (like that of an amputee who nevertheless "can walk" [248]); (4) past and counterfactual potencies (like that of a blind person who might be able to see); and (5) other puzzling de re possibilities (such as "irrational humans" [261]).The final... (shrink)

ABSTRACT: This paper traces the earliest development of the most basic principle of deduction, i.e. modus ponens (or Law of Detachment). ‘Aristotelian logic’, as it was taught from late antiquity until the 20th century, commonly included a short presentation of the argument forms modus (ponendo) ponens, modus (tollendo) tollens, modus ponendo tollens, and modus tollendo ponens. In late antiquity, arguments of these forms were generally classified as ‘hypothetical syllogisms’. However, Aristotle did not discuss such arguments, nor did he call any (...) arguments ‘hypothetical syllogisms’. The Stoic indemonstrables resemble the modus ponens/tollens arguments. But the Stoics never called them ‘hypothetical syllogisms’; nor did they describe them as ponendo ponens, etc. The tradition of the four argument forms and the classification of the arguments as hypothetical syllogisms hence need some explaining. In this paper, I offer some explanations by tracing the development of certain elements of Aristotle’s logic via the early Peripatetics to the logic of later antiquity. I consider the questions: How did the four argument forms arise? Why were there four of them? Why were arguments of these forms called ‘hypothetical syllogisms’? On what grounds were they considered valid? I argue that such arguments were neither part of Aristotle’s dialectic, nor simply the result of an adoption of elements of Stoic logic, but the outcome of a long, gradual development that begins with Aristotle’s logic as preserved in his Topics and Prior Analytics; and that, as a result, we have a Peripatetic logic of hypothetical inferences which is a far cry both from Stoic logic and from classical propositional logic, but which sports a number of interesting characteristics, some of which bear a cunning resemblance to some 20th century theories. (shrink)

This Festschrift in Professor Kristeller’s honor consists of contributions by scholars who have had some connection with Columbia University, his "intellectual home in the United States for three decades." It also includes a Tabula Gratulatoria listing many other friends from the United States and Europe. The editor’s opening essay provides an interesting and informative account of this scholar’s academic career, and should be read together with the complete annotated bibliography of his publications through 1974. The latter lists 149 "major (...) publications" and 220 "minor publications." Kristeller’s contributions to the history of Renaissance philosophy are well known to historians of philosophy, and deservedly so. Here reference should be made to his groundbreaking studies on Marsilio Ficino and Pomponazzi, and on others such as Pico della Mirandola and Petrarch, as well as on Renaissance Platonism, Aristotelianism in the Renaissance, Thomism in the Renaissance, Paduan Averroism, and Alexandrism. But he has also contributed greatly to the fields of medieval and Renaissance history, and especially to our understanding of Renaissance humanism, Renaissance music, and Renaissance art. He is universally recognized as one of the world’s foremost authorities on manuscript research, as is witnessed, for example, by the cooperative project, Catalogus Translationum et Commentariorum, which he founded, and by his Iter ltalicum. In all of these enterprises he has set an enviable example for other scholars by the exacting standards and the breadth of his expertise. It is only fitting, then, that the many essays in this Festschrift should reflect the breadth and depth of the scholarship so evident in the man to whom they are dedicated. Limitations of space will only permit us to list them here, with a few remarks reserved for those of more special interest to philosophers and historians of philosophy: Eugene F. Rice, Jr., "The De magia naturali of Jacques Lefèvre d’Etaples" ; Donald R. Kelley, "Louis Le Caron Philosophe", on Le Caron’s effort to bring together jurisprudence and classical, especially Platonic, philosophy; Richard H. Popkin, "The Pre-Adamite Theory in the Renaissance", with fascinating material about theories concerning men before Adam in La Peyrère and widely scattered earlier sources; Richard Lemay, "The Fly against the Elephant: Flandinus against Pomponazzi on Fate", on an unedited attack by an Augustinian Bishop against Pomponazzi’s espousal of the Stoic doctrine of fate; Martin Pine, "Pietro Pomponazzi and the Medieval Tradition of God’s Foreknowledge", on Pomponazzi’s solution to the problem of divine foreknowledge and human freedom inlight of his familiarity with earlier discussions by Boethius, Aquinas, Scotus, and Ockham; F. Edward Cranz, "Editions of the Latin Aristotle Accompanied by the Commentaries of Averroes", helpful to all who wish to consult late fifteenth- and sixteenth-century versions of the Latin Aristotle and especially the Latin Averroes; Josef Soudek, "A Fifteenth-Century Humanistic Bestseller: The Manuscript Diffusion of Leonardo Bruni’s Annotated Latin Version of the Aristotelian Economics" ; Edward P. Mahoney, "Nicoletto Vernia on the Soul and Immortality", which details a radical shift on Vernia’s part from an earlier Averroistic reading of Aristotle; Joan Kelly-Gadol, "Tommaso Campanella: The Agony of Political Theory in the Counter-Reformation", which attempts to account for some of the shifts and inconsistencies in Campanella’s political writings by placing them within the troubled personal and political circumstances of his life; Charles Trinkaus, "Protagoras in the Renaissance: An Exploration" ; Maristella de Panizza Lorch, "Voluptas, molle quoddam et non invidiosum nomen: Lorenzo Valla’s Defense of voluptas in the Preface to his De voluptate" ; Neal W. Gilbert, "Richard de Bury and the ‘Quires of Yesterday’s Sophisms"’, with much interesting material on the medieval tradition of sophismata, especially at Oxford; Malcolm Brown, "A Pre-Aristotelian Mathematician on Deductive Order" ; John H. Randall, Jr., "Paduan Aristotelianism Reconsidered", on evidence for influence of the Italian Aristotelian tradition on Galileo; William F. Edwards, "Niccoló Leoniceno and the Origins of Humanist Discussion of Method" ; C. Doris Hellman, "A Poem on the Occasion of the Nova of 1572" ; Edward Rosen, "Kepler’s Mastery of Greek" ; W. T. H. Jackson, "The Politics of a Poet: The Archipoeta as Revealed by his Imagery" ; John Charles Nelson, "Love and Sex in the Decameron" ; George B. Parks, "Pico della Mirandola in Tudor Translation" ; Richard Harrier, "Invention in Tudor Literature: Historical Perspectives" ; Helene Wieruszowski, "Jacob Burckhardt and Vespasiano da Bisticci " ; Morimichi Watanabe, "Gregor Heimburg and Early Humanism in Germany" ; Raymond de Roover, "Cardinal Cajetan on ‘Cambium’ or Exchange Dealings" ; and a series of text editions with introductions including Julius Kirshner, "Conscience and Public Finance: A Questio disputata of John of Legnano on the Public Debt of Genoa" ; John Mundy, "The Origins of the College of Saint-Raymond at the University of Toulouse" ; Charles B. Schmitt, "Girolamo Borro’s Multae sunt nostrarum ignorantionum causae " ; Guido Kisch, "An Unpublished Consiliumof Johannes Sichardus" ; Patricia H. Labalme, "The Last Will of a Venetian Patrician " ; Felix Gilbert, "The Last Will of a Venetian Grand Chancellor" ; Herbert S. Matsen, "Giovanni Garzoni to Alessandro Achillini : An Unpublished Letter and Defense" ; Theodore E. James, "A Fragment of An Exposition of the First Letter of Seneca to Lucilius Attributed to Peter of Mantua". The editor, his collaborators, and the contributors are all to be commended for the high quality of this volume.—J.F.W. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 351 raise questions for his thesis. Casey seems to want to suggest that our moral responses that do not fit well with the tradition of the virtues are simply the last remnants of a particular religion. But his own men· tion of the Stoics as one important source for the ' Christian ' tradition suggests that the commitments that Casey traces to Christianity-for example, to some version (...) of equality-may be more deeply rooted in the wider Western culture than he allows. And on the other hand, it is not obvious that everything that he associates with ' pagan ' virtues is necessarily incompatible with Christianity; after all, Aquinas, in addition to his extensive appropriation of the framework of the cardinal virtues, also argues that self-love is the first injunction of charity, after love of God (Summa theologiae 11-11, 26, 4). Even so, Casey's work raises important questions for contemporary moral theory. He succeeds in challenging too easy an appropriation of the tradition of the virtues by Christian ethics, and his challenge must he answered by anyone who would attempt to defend a contemporary Christian theory of the virtues. Moreover, by calling attention to the complexity and inner tensions that characterize our moral reflection, Casey reminds us that the category of ' the moral ' is not as straightforward as we sometimes take it to be. His book deserves to be widely read and carefully debated. University of Notre Dame Notre Dame, Indiana JEAN PORTER Nature and Scientific Method. Edited By DANIEL 0. DAHLSTROM. Studies in Philosophy and the History of Philosophy, vol. 22. Washington: Catholic University of America Press, 1991. Pp. 328. $48.95. William A. Wallace is a careful scholar and clear teacher of the history and philosophy of science. This volume is dedicated to him; the sixteen contributors were chosen because they have all been influenced by him, directly or indirectly. A comprehensive chronological list of Father Wallace's works, provided at the end of the book, reveals his two primary interests: contemporary issues in the philosophy of science and studies in the history of science. To reflect this, the first part of this book consists of seven essays on various contemporary issues in the philosophy of science; the second part is nine historical studies. This review will address each part in turn. Part I, "Contemporary Issues," suffers from a notable lack of unity. 352 BOOK REVIEWS Some authors directly and appropriately acknowledge the influence or inspiration of Wallace upon their contributions, the sole factor that might provide cohesion to the book as a whole. Other contributions are surprisingly devoid of any explicit connection to Wallace, save a tangential one. Wallace has provided the scholarly community with consistent and well-grounded work in the philosophy of science from a realist perspective. This realist position is shared by Rom Harre, the author of the opening essay, "Causality and Reality." Harre argues that the classical concept of causality, at least in part, survives as an ineliminable element of contemporary physics. To accomplish this, Harre distin· guishes weak from strong causality, the former as the expression of a causal mechanism, the latter as that connection stimulated by an event. This distinction is central to his Varieties of Realism. Realism is of two kinds: that which can be defined in terms of truth and falsity, and that which he terms " policy realism," which remains open to unlimited revisability of concepts, while preserving ontological categories. Having argued for these distinctions, Harre uses quantum field theory in his pursuit of a post-Humean conception of causality that transcends strict event ontology. Laudable as this pursuit may be, I wonder whether it can be achieved without reference to any conception of nature (s), a concept lamentably absent in Harre's more recent work. The realist theme is admirably pursued in Robert Sokolowski's " Explaining." Sokolowski argues for the irreducibility of names and explanations and their obvious correlates, things and causes. Form is in things; natural kinds exist; "ones" come in a splended variety reflecting the diversity of forms. Such unpopular claims are expertly defended in this essay, one of the best contributions in the book. Sokolowski also paints a fine picture of the mind... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Rhetoric as a Balancing of Ends:Cicero and MachiavelliGary RemerIn his youthful work on rhetoric, De inventione (published about 86 B.C.E.), Cicero lists the ends for deliberative (political) oratory as honestas and utilitas (the good or honorable and the useful or expedient). In more mature writings, like De oratore (55 B.C.E.) and De officiis (44 B.C.E.), Cicero maintains a similar position: that the morally good and the beneficial are (...) reconcilable. For example, Cicero assumes in De officiis the identity of the honestum and the utile. He states there that "there is one rule for all cases;... either the thing that seems beneficial must not be dishonorable, or if it is dishonorable, it must not seem beneficial" (On Duties 3.81).1 In recent years, Victoria Kahn (1994) and J. Jackson Barlow (1999) have offered Machiavelli's "rhetorical politics"—a politics "attuned to the rhetorical concerns of effective political action" (Kahn 1994, 24)—as a more coherent and intellectually honest alternative to Cicero's attempt to reconcile irreconcilables.2 They contend that, unlike Cicero, Machiavelli accepts the impossibility of simultaneously upholding the morally good and the useful. For Machiavelli, the successful political actor must choose the utile over the honestum.Cicero, however, is not alone in his inconsistency. As Kahn demonstrates, Machiavelli's account of virtù is itself inconsistent. For example, he sometimes includes morality as an element of excellence (virtù) and at other times does not. I contend in this article, however, that Kahn's interpretation [End Page 1] of Machiavelli's contradictoriness as only "apparent," a variability, she argues, that is rhetorically inspired rather than logically deficient, applies not only to Machiavelli, as Kahn would have it, but also to Cicero. I argue that both Machiavelli and Cicero eschew "clear-cut or permanent distinctions" within virtù and between the honestum and the utile, respectively, because they wish to signal the political actor's need for flexibility (Kahn 1994, 30). Insofar as Cicero's internal contradictions, like Machiavelli's, are apparent but not real, I hold that Machiavelli does not offer a political approach that is superior to Cicero's, at least not in the sense of greater intellectual coherence.Despite their similarities, however, Cicero and Machiavelli differ from each other in that Cicero, in contrast to Machiavelli, openly affirms that politics is incomplete without a dual commitment to the good and the beneficial. I examine Machiavelli's focus on the useful and public as opposed to Cicero's additional commitment to the honorable and to the private. I analyze, in particular, the pursuit of glory in Machiavelli as it derives from early classical culture, which was preoccupied with appearances and the search for immortality. I argue that Cicero, while not abandoning the quest for glory, also vests this concept (under Stoic influence) with a private, moral character. In doing so, Cicero adheres to the rhetorical principle of decorum, which obliges orators to adapt themselves to context. This principle, I maintain, is not only a matter of expediency for Cicero but also a moral duty. While Cicero accommodates himself to a Roman world in which private morality was already an important part of one's life, Machiavelli violates decorum, attempting to resurrect a heroic ideal that disappeared long ago.Although most recent work on the revival of rhetorical ethics focuses on Aristotle (see Allen 2004, 140–59; Furley and Nehamas 1994; Garver 1994; Rorty 1996), I discuss Cicero in this essay. Not only has Cicero been the dominant influence on the Western tradition of rhetoric, but he also (unlike Aristotle) includes the honorable as one of the ends of deliberative oratory. Thus Cicero states in De inventione that while "Aristotle accepts advantage as the end [of deliberative oratory],... I prefer both honor and advantage" (2.52.156). And while Aristotle's position on deliberative oratory's ends does not mean that he ignores moral considerations, Cicero's decision to promote the good as an explicit rhetorical end forces his readers (and Machiavelli) to confront the relationship between virtue and expediency in a way that Aristotle's readers do not (Cox 1997, 1113). I concentrate, in particular, on Cicero's De officiis because... (shrink)

This is a collection of papers already published (spanning the years from 1976 to 2002) covering mostly the history of philosophy, with the exception of Aristotle (papers on Aristotle are contained in vol. I). The bulk of the papers (eight) are on Plato (on the Meno, Phaedo, Republic and Sophist), two concern the Presocratics, one paper discusses the theory of sign with the Stoics, five are on modern philosophy (Descartes, Spinoza, Leibniz and Kant). Two papers are in English, the rest (...) in German. The book contains an index of proper names as well as a list of Ebert’s publications up to 2002. (shrink)

This article examines the methodology of a core branch of contemporary political theory or philosophy: “analytic” political theory. After distinguishing political theory from related fields, such as political science, moral philosophy, and legal theory, the article discusses the analysis of political concepts. It then turns to the notions of principles and theories, as distinct from concepts, and reviews the methods of assessing such principles and theories, for the purpose of justifying or criticizing them. Finally, it looks at a recent debate (...) on how abstract and idealized political theory should be, and assesses the significance of disagreement in political theory. The discussion is carried out from an angle inspired by the philosophy of science. (shrink)

The third and fourth books of Cicero's _Tusculan Disputations_ deal with the nature and management of human emotion: first grief, then the emotions in general. In lively and accessible style, Cicero presents the insights of Greek philosophers on the subject, reporting the views of Epicureans and Peripatetics and giving a detailed account of the Stoic position, which he himself favors for its close reasoning and moral earnestness. Both the specialist and the general reader will be fascinated by the Stoics' (...) analysis of the causes of grief, their classification of emotions by genus and species, their lists of oddly named character flaws, and by the philosophical debate that develops over the utility of anger in politics and war. Margaret Graver's elegant and idiomatic translation makes Cicero's work accessible not just to classicists but to anyone interested in ancient philosophy and psychotherapy or in the philosophy of emotion. The accompanying commentary explains the philosophical concepts discussed in the text and supplies many helpful parallels from Greek sources. (shrink)

There appears to be no limit to the number and kind of things which someone, somewhere, might feel to be in need of justification: the existence of snakes and spiders, one’s own existence, some or all of the things one does, some or all of the things one thinks and feels. The need for justification is a need to feel, or to be able to show, that a thing is somehow as it should be, right, proper, appropriate, or at least (...) that it is all right, not blameworthy, unsuitable, or discreditable. The forms taken by the attempt to justify vary greatly, as the preceding list of adjectives begins to show; and the need to justify appears variously, at times as a dull sense of unease or discomfort, at times as a conscious sense of obligation to produce good reasons for what one does, thinks, or feels. Perhaps the need for justification, like a need for yachts or applause, is something one would be better off without; might not one be a stoic or cynic philosopher on the topic of justification, and advocate a life free from the burdens of the need to justify, as more becoming to a free man? (shrink)

This paper considers what function—if any—colocation of bodies may have in the Stoic theory of blending (κρᾶσις), by examining (1) whether colocation is part of the definition of what blending is; and (2) whether colocation is posited by the Stoics as a requirement necessary for the definition to be satisfied. I reconstruct the standard, Chrysippean definition of blending, and I show that the answer to (1) is ‘no’; further, I argue that the evidence gives no reason to affirm (2). (...) Thus, it appears that colocation does not have a central function in the Stoic theory of blending. (shrink)

Are companies, churches, and states genuine agents? Or are they just collections of individuals that give a misleading impression of unity? This question is important, since the answer dictates how we should explain the behaviour of these entities and whether we should treat them as responsible and accountable on the model of individual agents. Group Agency offers a new approach to that question and is relevant, therefore, to a range of fields from philosophy to law, politics, and the social sciences. (...) Christian List and Philip Pettit argue that there really are group or corporate agents, over and above the individual agents who compose them, and that a proper approach to the social sciences, law, morality, and politics must take account of this fact. Unlike some earlier defences of group agency, their account is entirely unmysterious in character and, despite not being technically difficult, is grounded in cutting-edge work in social choice theory, economics, and philosophy. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

This is an edited transcript of a conversation to be included in the collection "Conversations on Rational Choice". The conversation was conducted in Munich on 7 and 9 February 2016.

The third and fourth books of Cicero's Tusculan Disputations deal with the nature and management of human emotion: first grief, then the emotions in general. In lively and accessible style, Cicero presents the insights of Greek philosophers on the subject, reporting the views of Epicureans and Peripatetics and giving a detailed account of the Stoic position, which he himself favors for its close reasoning and moral earnestness. Both the specialist and the general reader will be fascinated by the Stoics' (...) analysis of the causes of grief, their classification of emotions by genus and species, their lists of oddly named character flaws, and by the philosophical debate that develops over the utility of anger in politics and war. Margaret Graver's elegant and idiomatic translation makes Cicero's work accessible not just to classicists but to anyone interested in ancient philosophy and psychotherapy or in the philosophy of emotion. The accompanying commentary explains the philosophical concepts discussed in the text and supplies many helpful parallels from Greek sources. (shrink)

Suppose that the members of a group each hold a rational set of judgments on some interconnected questions, and imagine that the group itself has to form a collective, rational set of judgments on those questions. How should it go about dealing with this task? We argue that the question raised is subject to a difficulty that has recently been noticed in discussion of the doctrinal paradox in jurisprudence. And we show that there is a general impossibility theorem that that (...) difficulty illustrates. Our paper describes this impossibility result and provides an exploration of its significance. The result naturally invites comparison with Kenneth Arrow's famous theorem (Arrow, 1963 and 1984; Sen, 1970) and we elaborate that comparison in a companion paper (List and Pettit, 2002). The paper is in four sections. The first section documents the need for various groups to aggregate its members' judgments; the second presents the discursive paradox; the third gives an informal statement of the more general impossibility result; the formal proof is presented in an appendix. The fourth section, finally, discusses some escape routes from that impossibility. (shrink)

Thinkers from the Chinese and Greco-Roman traditions posit that disparate objects throughout the cosmos have mutual affinities. In the Stoic tradition, such affinities are explained through “sympathy.” In the Chinese tradition, the explanatory principle is often called ganying 感應 (resonance). In addition, both traditions use similar philosophical strategies when discussing these concepts. Thinkers cite natural correspondences, placing them in parallel lists as evidence for philosophical truths. On the surface, the analogous concepts and strategies hint that these thinkers share (...) similar philosophical goals. However, analysis of the role natural correspondences play in argumentation discovers fundamental differences between the two traditions. The focus on particular arguments instead of broader cosmological trends offers a different perspective for comparative research, and the conclusions raise questions concerning how scholarship should analyze philosophical trends in early China. (shrink)

The ``doctrinal paradox'' or ``discursive dilemma'' shows that propositionwise majority voting over the judgments held by multiple individuals on some interconnected propositions can lead to inconsistent collective judgments on these propositions. List and Pettit (2002) have proved that this paradox illustrates a more general impossibility theorem showing that there exists no aggregation procedure that generally produces consistent collective judgments and satisfies certain minimal conditions. Although the paradox and the theorem concern the aggregation of judgments rather than preferences, they invite comparison (...) with two established results on the aggregation of preferences: the Condorcet paradox and Arrow's impossibility theorem. We may ask whether the new impossibility theorem is a special case of Arrow's theorem, or whether there are interesting disanalogies between the two results. In this paper, we compare the two theorems, and show that they are not straightforward corollaries of each other. We further suggest that, while the framework of preference aggregation can be mapped into the framework of judgment aggregation, there exists no obvious reverse mapping. Finally, we address one particular minimal condition that is used in both theorems – an independence condition – and suggest that this condition points towards a unifying property underlying both impossibility results. (shrink)

This paper sketches a new and somewhat heterodox metaphysical theory of consciousness: the “many-worlds theory”. It drops the assumption that all conscious subjects’ experiences are features of one and the same world and instead associates different subjects with different “first-personally centred worlds”. We can think of these as distinct “first-personal realizers” of a shared “third-personal world”, where the latter is supervenient, in a sense to be explained. This is combined with a form of modal realism, according to which different subjects’ (...) first-personally centred worlds are all real, though only one of them is present for each subject. The theory offers a novel way of capturing the irreducibly subjective nature of conscious experience without lapsing into solipsism. The paper also looks at some scientific theories of consciousness, such as integrated information theory, through the proposed lens and reconsiders the hard problem of consciousness. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Cambridge Companion to Greek and Roman PhilosophyBrad InwoodDavid Sedley, editor. The Cambridge Companion to Greek and Roman Philosophy. New York: Cambridge University Press, 2003. Pp. xiv + 396. Cloth, $65.00, Paper, $24.00.Readers of this journal are familiar with the Cambridge Companions. What is striking about this one is its broad sweep. A Companion to all of ancient philosophy will necessarily present the reader with a somewhat shallow (...) overview. Is this really such a good idea? What is its role, when there are already Companions to Early Greek Philosophy, Plato, Aristotle, The Stoics, and Plotinus? The editor answers this by aiming also to provide a "book to accompany survey courses on the history of ancient philosophy." It is challenging to provide an overview of the first millennium and more of Western philosophy, but this pedagogical goal is tougher. David Sedley has managed both tasks well. Although some chapters are not suitable hors d'oeuvres for beginners, all will nourish the hungry and whet the appetite for more. Even those chapters which amount to substantial entrées too rich for novices are excellent meat. There are no reheated leftovers. From beginning to end this is a feast of reason.The book makes abundant use of tables to present large amounts of complex material economically—lists of Plato's dialogues indicate topics, speakers and lengths; Roman philosophers are displayed with biographical notes, school affiliations, and major works; philosophical commentators are given with date and the author and work commented on; nineteen Presocratics are adorned with birthplace, date, key ideas and thumbnail comments. Many of the chapters cultivate an elegant but economical style which must be due in part to editorial encouragement and example. Though it is bound to skip over much, it avoids even the appearance of superficiality. Jill Kraye's chapter on "The legacy of ancient philosophy" to the medieval and modern world is a masterpiece of clarity and compression as well as a superb piece of intellectual history.Kraye's survey concludes the volume. Sedley's substantial introduction begins it by motivating the study of ancient philosophy through two characteristic questions, "What is a good human life?" and "Why isn't the earth falling?" and culminates in a highly informative guide to our various textual sources and a compact demonstration of how they become the editions and translations we use.Jonathan Barnes opens (ch. 1) with a homily on "Argument in ancient philosophy"; splendid stuff, but for all its lucidity, not an ideal appetizer for the survey course students I teach—it's a dessert better served later in the volume. Similarly thematic chapters on "Philosophy and literature" (ch. 8, Martha Nussbaum), "Philosophy and science" (ch. 10, R.J. Hankinson) and "Philosophy and religion" (ch. 11, Glenn Most) set ancient philosophy in broader context. Hankinson splendidly communicates the scientific agenda of the ancient world, perhaps over-emphasizing the mathematical sciences, Galen and scientific epistemology at the cost of "scientific" writers like Strabo, Pliny, and Vitruvius. Nussbaum concentrates on the fourth century B.C. at the expense of later centuries, but gives excellent value on the canonical texts, the Republic and the Poetics. Most's essay explores the interpenetration of religious themes with the philosophical (emphasizing how differently pagan religion interacted with philosophy than does any modern faith) and adds an acute though exaggerated set of observations on the religious quality of the ancient philosophical way of life. It would be hard to locate the saintly sages Most presents as typical in the logical landscape evoked by Barnes.The remaining chapters cover periods and major figures. Malcolm Schofield on the Presocratics (ch. 2), Sarah Broadie on the Sophists and Socrates (ch. 3), Christopher Rowe on Plato (ch. 4), John Cooper on Aristotle (ch. 5), Jacques Brunschwig and David Sedley on Hellenistic philosophy, A.A. Long on Roman (ch. 7), and Frans de Haas on Late ancient philosophy. The authors are all eloquent authorities and it's a menu with no bad choices—though I'm sure my undergraduates will find Cooper's treatment of the figures of Aristotle's syllogisms indigestible. I found Rowe's careful balance of old and new in his introduction to... (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

Three major problems continue to perplex every interpreter of Stoic logic since Lukasiewicz's [[sic]] revolutionary studies in 1932: the alleged opposition of Stoic dialectic to Aristotelian syllogistic; the baffling status of "implication" in Diodorus and Chrysippus; the questionable completeness of the Stoic system based on the five "indemonstrables." Expanding on Lukasiewicz's [[sic]] findings, Benson Mates and Mary Kneale argued for interpreting Stoic logic in terms of a logic propositions formally analogous to our propositional calculus. Furthermore Mates (...) and, to a less extent, Kneale cast doubts on the accepted opinion that Diodorus' "implication" was the ancient version of what C. I. Lewis calls "strict implication," and opted for B. Russell's "formal implication," while attributing the first type of implication to Chrysippus alone. Finally Mates, Kneale, and Reymond questioned the alleged completeness of the Stoic logic system. Among recent logicians this very question still calls for an answer. In form and content, Mignucci's knowledgeable study on the meaning of Stoic logic is a lucid restatement of his predecessors published conclusions. With the exception of the first chapter devoted to a résumé of the main contributions in the field, the remaining sections of his essay are organized around Mates' topical structure of Stoic epistemology and semantics, the doctrine of the proposition, and the theory of the five "anapodictics." Mignucci makes, however, two relevant additions which may raise suspicion among the most rigorous of logicians. In the first chapter and again in the conclusion of his essay, he analyzes carefully the alleged opposition of Aristotle's logic of classes to the Stoic logic of propositions. For Mignucci, the acceptance of the logic of propositions implies one's commitment to an ontological domain which is incompatible with the metaphysical discourse of the logic of classes. He argues that the two logics are complete and formally analogous only in the sense that from the Stoic first axiom and from the Aristotelian Barbara one can deduce all the rules which constitute their respective logics. This completeness is, however, logically dependent upon the Aristotelian and Stoic view of reality.--L. M. P. (shrink)

I argue that free will and determinism are compatible, even when we take free will to require the ability to do otherwise and even when we interpret that ability modally, as the possibility of doing otherwise, and not just conditionally or dispositionally. My argument draws on a distinction between physical and agential possibility. Although in a deterministic world only one future sequence of events is physically possible for each state of the world, the more coarsely defined state of an agent (...) and his or her environment can be consistent with more than one such sequence, and thus different actions can be “agentially possible”. The agential perspective is supported by our best theories of human behaviour, and so we should take it at face value when we refer to what an agent can and cannot do. On the picture I defend, free will is not a physical phenomenon, but a higher-level one on a par with other higher-level phenomena such as agency and intentionality. (shrink)

In this paper, I argue that no theory of consciousness can simultaneously respect four initially plausible metaphysical claims – namely, ‘first-person realism’, ‘non-solipsism’, ‘non-fragmentation’, and ‘one world’ – but that any three of the four claims are mutually consistent. So, theories of consciousness face a ‘quadrilemma’. Since it will be hard to achieve a consensus on which of the four claims to retain and which to give up, we arrive at a landscape of competing theories, all of which have pros (...) and cons. I will briefly indicate which kinds of theories correspond to the four horns of the quadrilemma. (shrink)

It is often argued that higher-level special-science properties cannot be causally efficacious since the lower-level physical properties on which they supervene are doing all the causal work. This claim is usually derived from an exclusion principle stating that if a higher-level property F supervenes on a physical property F* that is causally sufficient for a property G, then F cannot cause G. We employ an account of causation as difference-making to show that the truth or falsity of this principle is (...) a contingent matter and derive necessary and sufficient conditions under which a version of it holds. We argue that one important instance of the principle, far from undermining non-reductive physicalism, actually supports the causal autonomy of certain higher-level properties. (shrink)

This article examines the methodology of a core branch of contemporary political theory or philosophy: “analytic” political theory. After distinguishing political theory from related fields, such as political science, moral philosophy, and legal theory, the article discusses the analysis of political concepts. It then turns to the notions of principles and theories, as distinct from concepts, and reviews the methods of assessing such principles and theories, for the purpose of justifying or criticizing them. Finally, it looks at a recent debate (...) on how abstract and idealized political theory should be, and assesses the significance of disagreement in political theory. The discussion is carried out from an angle inspired by the philosophy of science. (shrink)

This paper offers a comparison of three different kinds of collective attitudes: aggregate, common, and corporate attitudes. They differ not only in their relationship to individual attitudes—e.g., whether they are “reducible” to individual attitudes—but also in the roles they play in relation to the collectives to which they are ascribed. The failure to distinguish them can lead to confusion, in informal talk as well as in the social sciences. So, the paper’s message is an appeal for disambiguation.

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

This item was published as 'Appendix 3: An Implication of the k-option Condorcet jury mechanism for the probability of cycles' in List and Goodin (2001) http://eprints.lse.ac.uk/705/. Standard results suggest that the probability of cycles should increase as the number of options increases and also as the number of individuals increases. These results are, however, premised on a so-called "impartial culture" assumption: any logically possible preference ordering is assumed to be as likely to be held by an individual as any other. (...) The present chapter shows, in the three-option case, that given suitably systematic, however slight, deviations from an impartial culture situation, the probability of a cycle converges either to zero (more typically) or to one (less typically) as the number of individuals increases. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

Scientists often think of the world as a dynamical system, a stochastic process, or a generalization of such a system. Prominent examples of systems are the system of planets orbiting the sun or any other classical mechanical system, a hydrogen atom or any other quantum–mechanical system, and the earth’s atmosphere or any other statistical mechanical system. We introduce a general and unified framework for describing such systems and show how it can be used to examine some familiar philosophical questions, including (...) the following: how can we define nomological possibility, necessity, determinism, and indeterminism; what are symmetries and laws; what regularities must a system display to make scientific inference possible; how might principles of parsimony such as Occam’s Razor help when we make such inferences; what is the role of space and time in a system; and might they be emergent features? Our framework is intended to serve as a toolbox for the formal analysis of systems that is applicable in several areas of philosophy. (shrink)

Philosophers have argued about the nature and the very existence of free will for centuries. Today, many scientists and scientifically minded commentators are skeptical that it exists, especially when it is understood to require the ability to choose between alternative possibilities. If the laws of physics govern everything that happens, they argue, then how can our choices be free? Believers in free will must be misled by habit, sentiment, or religious doctrine. Why Free Will Is Real defies scientific orthodoxy and (...) presents a bold new defense of free will in the same naturalistic terms that are usually deployed against it. -/- Unlike those who defend free will by giving up the idea that it requires alternative possibilities to choose from, Christian List retains this idea as central, resisting the tendency to defend free will by watering it down. He concedes that free will and its prerequisites—intentional agency, alternative possibilities, and causal control over our actions—cannot be found among the fundamental physical features of the natural world. But, he argues, that’s not where we should be looking. Free will is a “higher-level” phenomenon found at the level of psychology. It is like other phenomena that emerge from physical processes but are autonomous from them and not best understood in fundamental physical terms—like an ecosystem or the economy. When we discover it in its proper context, acknowledging that free will is real is not just scientifically respectable; it is indispensable for explaining our world. (shrink)

At the core of republican thought, on Philip Pettit’s account, lies the conception of freedom as non-domination, as opposed to freedom as noninterference in the liberal sense. I revisit the distinction between liberal and republican freedom and argue that republican freedom incorporates a particular rule-of-law requirement, whereas liberal freedom does not. Liberals may also endorse such a requirement, but not as part of their conception of freedom itself. I offer a formal analysis of this rule-of-law requirement and compare liberal and (...) republican freedom on its basis. While I agree with Pettit that republican freedom has broader implications than liberal freedom, I conclude that we face a trade-off between two dimensions of freedom (scope and robustness) and that it is harder for republicans to solve that trade-off than it is for liberals. Key Words: freedom • republicanism • liberalism • noninterference • non-domination • rule of law • robustness • liberal paradox. (shrink)

Many groups make decisions over multiple interconnected propositions. The “doctrinal paradox” or “discursive dilemma” shows that propositionwise majority voting can generate inconsistent collective sets of judgments, even when individual sets of judgments are all consistent. I develop a simple model for determining the probability of the paradox, given various assumptions about the probability distribution of individual sets of judgments, including impartial culture and impartial anonymous culture assumptions. I prove several convergence results, identifying when the probability of the paradox converges to (...) 1, and when it converges to 0, as the number of individuals increases. Drawing on the Condorcet jury theorem and work by Bovens and Rabinowicz , I use the model to assess the “truth-tracking” performance of two decision procedures, the premise- and conclusion-based procedures. I compare the present results with existing results on the probability of Condorcet’s paradox. I suggest that the doctrinal paradox is likely to occur under plausible conditions. (shrink)