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  1. Is Every Deductively Valid Argument Circular?Danny Frederick - manuscript
    David Miller claims that every valid deductive argument begs the question. Other philosophers and logicians have made similar claims. I show that the claim is false. Its appeal depends on the existence of logical terminology, particularly concerning what a proposition 'contains' or its 'logical content,' that is best understood as metaphoric and that, given its aptness to mislead, would be better eschewed. I show how the terminology appears to derive from early modern theories of the nature of mind, ideas and (...)
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  2. Brouwer's Intuition of Twoity and Constructions in Separable Mathematics.Bruno Bentzen - forthcoming - History and Philosophy of Logic:1-21.
    My first aim in this paper is to use time diagrams in the style of Brentano to analyze constructions in Brouwer's separable mathematics more precisely. I argue that constructions must involve not only pairing and projecting as basic operations guaranteed by the intuition of twoity, as sometimes assumed in the literature, but also a recalling operation. My second aim is to argue that Brouwer's views on the intuition of twoity and arithmetic lead to an ontological explosion. Redeveloping the constructions of (...)
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  3. Self-examination, Understanding, Transmission: On Becoming a Teacher in Clauberg’s Logica vetus et nova.Adi Efal-Lautenschläger - 2023 - In Andrea Strazzoni & Marco Sgarbi (eds.), Reading Descartes. Consciousness, Body, and Reasoning. Florence: Firenze University Press. pp. 101-128.
    This paper takes a fresh look at Johannes Clauberg’s Logica vetus et nova, in order to try to clarify its nature and character. Differently from prior readings of Clauberg that analyze his philosophy from the point of view of the construction of ‘ontology’, the approach of the present paper sees in Clauberg’s philosophy a late-Humanist work, accentuating his pedagogic and hermeneutical interests. Indeed, in Clauberg’s philosophy, hermeneutics and pedagogy are intrinsically bound together. This, the paper suggests, is supported not only (...)
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  4. What can anyone say so far on the Peirce-CJC relation?Robert Junqueira - 2023 - Divyadaan: Journal of Philosophy and Education 34 (2):191-222.
    Charles S. Peirce (†1914) is often referred to as the founder of contemporary semiotics. Peirce provided the community of inquiry with a very convincing explanation of what a sign is. Peirce's definition of the sign bears a striking resemblance to that proposed in the 1606 volume of the CJC, the Coimbra Jesuit Course, authored by Sebastião do Couto (†1639). The community of inquiry holds the belief that Peirce drew from the writings of Couto to arrive at his triadic conception of (...)
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  5. Peirce and the Coimbra Jesuit Course: A Bond Far More Pervasive Than Commonly Believed.Robert Junqueira - 2023 - Phicare (Philosophy and Care Repository).
    This paper has been presented at the Charles S. Peirce Society’s 10-Minute Thesis Initiative: “His Glassy Essence in Relation” on February 18, 2023, where papers were also presented by Professor Doctor António Manuel Martins and Professor Doctor Mohammad Shafiei, respectively affiliated to the Coimbra Institute for Philosophical Studies and Shahid Beheshti University. -/- The edition “His Glassy Essence in Relation” of the Charles S. Peirce Society’s 10-Minute Thesis Initiative has been jointly organized by Aaron Wilson, António Manuel Martins, Mohammad Shafiei, (...)
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  6. O Elenchus no Teeteto.Gabriel Zaccaro - 2023 - Revista de Estudos Filosóficos e Históricos da Antiguidade 40:01-26.
    O elenchus é o método pelo qual Sócrates evidencia as incoerências entre a tese de seu interlocutor e seu sistema de crenças. Na visão de Gregory Vlastos, o método utilizado por Sócrates no Teeteto não é elêntico porque ele não visa a refutação direta da tese inicial de Teeteto. Argumentando contra a visão de Vlastos defendo que Sócrates constrói ao final da primeira parte do diálogo objeções fundamentadas em premissas aceitas por Teeteto que culminam no objetivo clássico do elenchus. Além (...)
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  7. John Dumbleton on Insolubles: An Edition of an Epitome of His Solution to Insolubles.Barbara Bartocci & Stephen Read - 2022 - Noctua 9 (3):48-88.
    This paper provides a philosophical analysis and a new edition of an anonymous Epitome of John Dumbleton’s solution to the semantic paradoxes. The first part of this paper briefly presents Dumbleton’s cassationist solution to the semantic paradoxes, which the English philosopher proposes in his Summa Logicae, written in the 1330s–40s. The second part investigates the solution to various types of insolubles proposed by the anonymous author of the Epitome. The third part provides a new critical edition of the Latin text (...)
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  8. Bunge y la validez de la adición.Luis Estrada González & Christian Romero-Rodríguez - 2022 - In German Guerrero-Pino (ed.), Ciencia, Realismo y materialismo. Universidad del Valle. pp. 191-202.
    En The paradox of Addition and its dissolution (1969), Mario Bunge presenta algunos argumentos para mostrar que la Regla de Adición puede ocasionar paradojas o problemas semánticos. Posteriormente, Margáin (1972) y Robles (1976) mostraron que las afirmaciones de Bunge son insostenibles, al menos desde el punto de vista de la lógica clásica. Aunque estamos de acuerdo con las críticas de Margáin y Robles, no estamos de acuerdo en el diagnóstico del origen del problema y tampoco con la manera en la (...)
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  9. Husserl on Kant and the critical view of logic.Mirja Hartimo - 2022 - Inquiry: An Interdisciplinary Journal of Philosophy 65 (6):707-724.
    ABSTRACT This paper seeks to clarify Husserl’s critical remarks about Kant’s view of logic by comparing their respective views of logic. In his Formal and Transcendental Logic Husserl criticizes Kant for not asking transcendental questions about formal logic, but rather ascribing an ‘extraordinary apriority’ to it. He thinks the reason for Kant’s uncritical attitude to logic lies in Kant’s view of logic as directed toward the subjective, instead of being concerned with a ‘“world” of ideal Objects’. Whereas for Kant, general (...)
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  10. Essays on Argumentation in Antiquity. [REVIEW]Michael Scanlan - 2022 - History and Philosophy of Logic 43 (4):391-394.
    Most readers will consult this volume for one or two of the articles in it. However, reading through the volume as a whole gives an interesting perspective on research in this area. I will briefly...
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  11. Non-classical Comparative Logic I: Standard Categorical Logic–from SLe to IFLe.Amer Amikhteh & Seyed Ahmad Mirsanei - 2021 - Logical Studies 12 (1):1-24.
    n this paper, a non-classical axiomatic system was introduced to classify all moods of Aristotelian syllogisms, in addition to the axiom "Every a is an a" and the bilateral rules of obversion of E and O propositions. This system consists of only 2 definitions, 2 axioms, 1 rule of a premise, and moods of Barbara and Datisi. By adding first-degree propositional negation to this system, we prove that the square of opposition holds without using many of the other rules of (...)
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  12. Alasdair Urquhart on Nonclassical and Algebraic Logic and Complexity of Proofs.Ivo Düntsch & Edwin Mares (eds.) - 2021 - Springer Verlag.
    This book is dedicated to the work of Alasdair Urquhart. The book starts out with an introduction to and an overview of Urquhart’s work, and an autobiographical essay by Urquhart. This introductory section is followed by papers on algebraic logic and lattice theory, papers on the complexity of proofs, and papers on philosophical logic and history of logic. The final section of the book contains a response to the papers by Urquhart. Alasdair Urquhart has made extremely important contributions to a (...)
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  13. The Origin and Nature of Language and Logic: Perspectives in Medieval Islamic, Jewish, and Christian Thought: N. Germann and S. Harvey, editors. Turnhout: Brepols, 2020. xiii +422 pp. €71,46, ISBN 978-2503588926.W. Hodges - 2021 - History and Philosophy of Logic 43 (2):183-186.
    This well-produced volume is the Proceedings of the Twentieth International Colloquium of the Société Internationale pour l'Étude de la Philosophie Médiévale, Freiburg im Breisgau 2014. Sixteen cha...
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  14. History of Arabic Logic.Mehmet Karabela - 2021 - In Islamic Thought Through Protestant Eyes. New York: Routledge. pp. 224-235.
    Johannes Steuchius’ disputatio uses Arabic logic to present an historical account of the development of philosophical thought in Arabia before and after the emergence of Islam. Steuchius first proposes that philosophy drew its origins from the East. His evidence for this claim is that many of the Greek philosophers, considered the forefathers of European philosophy, began cultivating their philosophical thinking as a result of exposure to ancient Eastern philosophy. After the introduction of Greek philosophy, it is agreed that dialectic was (...)
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  15. Kant, Frege, and the normativity of logic: MacFarlane 's argument for common ground.Tyke Nunez - 2021 - European Journal of Philosophy 29 (4):988-1009.
  16. On the Origin of Logical Determinism in Babylonia.Andrew Schumann - 2021 - Logica Universalis 15 (3):331-357.
    In this paper, I show that the idea of logical determinism can be traced back from the Old Babylonian period at least. According to this idea, there are some signs which can explain the appearance of all events. These omens demonstrate the will of gods and their power realized through natural forces. As a result, each event either necessarily appears or necessarily disappears. This idea can be examined as the first version of eternalism – the philosophical belief that each temporal (...)
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  17. Cantor's Abstractionism and Hume's Principle.Claudio Ternullo & Luca Zanetti - 2021 - History and Philosophy of Logic 43 (3):284-300.
    Richard Kimberly Heck and Paolo Mancosu have claimed that the possibility of non-Cantorian assignments of cardinalities to infinite concepts shows that Hume's Principle (HP) is not implicit in the concept of cardinal number. Neologicism would therefore be threatened by the ‘good company' HP is kept by such alternative assignments. In his review of Mancosu's book, Bob Hale argues, however, that ‘getting different numerosities for different countable infinite collections depends on taking the groups in a certain order – but it is (...)
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  18. Categorical Propositions and Existential Import: A Post-modern Perspective.Byeong-Uk Yi - 2021 - History and Philosophy of Logic 42 (4):307-373.
    This article examines the traditional and modern doctrines of categorical propositions and argues that both doctrines have serious problems. While the doctrines disagree about existential imports...
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  19. Introduction to ‘Studies in Post-Medieval Logic’.Christophe Geudens & Steven Coesemans - 2020 - History and Philosophy of Logic 41 (4):305-308.
    This special issue contains three papers on evolutions in logic during the so-called ‘post-medieval’ period. The papers discuss the following topics: traditions of...
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  20. Race, Gender, and the History of Early Analytic Philosophy.Matt LaVine - 2020 - Lanham: Lexington Books.
    Matt LaVine argues that there is more potential in bringing the history of early analytic philosophy and critical theories of race and gender together than has been traditionally recognized. In particular, he explores the changes associated with a shift from revolutionary aspects of early analytic philosophy.
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  21. The Principle of Equivalence as a Criterion of Identity.Ryan Samaroo - 2020 - Synthese 197 (8):3481-3505.
    In 1907 Einstein had the insight that bodies in free fall do not “feel” their own weight. This has been formalized in what is called “the principle of equivalence.” The principle motivated a critical analysis of the Newtonian and special-relativistic concepts of inertia, and it was indispensable to Einstein’s development of his theory of gravitation. A great deal has been written about the principle. Nearly all of this work has focused on the content of the principle and whether it has (...)
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  22. Paraconsistency.Rafael R. Testa - 2020 - In James M. Mattingly (ed.), The SAGE Encyclopedia of Theory in Science, Technology, Engineering, and Mathematics. SAGE Publications. pp. 629-632.
    Paraconsistency is the study of logical systems with a non-explosive negation such that a pair of contradictory formulas (with respect to such negation) does not necessarily imply triviality, discordant to what would be expected by contemporary logical orthodoxy. From a purely logical point of view, the significance of paraconsistency relies on the meticulous distinction between the general notions of contradictoriness and triviality of a theory—respectively, the fact that a given theory proves a proposition and its negation, and the fact that (...)
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  23. Categoricity and Negation. A Note on Kripke’s Affirmativism.Constantin C. Brîncuș & Iulian D. Toader - 2019 - In The Logica Yearbook 2018. London: College Publications. pp. 57-66.
    We argue that, if taken seriously, Kripke's view that a language for science can dispense with a negation operator is to be rejected. Part of the argument is a proof that positive logic, i.e., classical propositional logic without negation, is not categorical.
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  24. The Talmudic Logic Project, Ongoing Since 2008.Dov M. Gabbay, Uri Schild & Esther David - 2019 - Logica Universalis 13 (4):425-442.
    We describe the state of the Talmudic Logic project as of end of 2019. The Talmud is the most comprehensive and fundamental work of Jewish religious law, employing a large number of logical components centuries ahead of their time. In many cases the basic principles are not explicitly formulated, which makes it difficult to formalize and make available to the modern student of Logic. This project on Talmudic Logic, aims to present logical analysis of Talmudic reasoning using modern logical tools. (...)
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  25. On the Arithmetical Truth of Self‐Referential Sentences.Kaave Lajevardi & Saeed Salehi - 2019 - Theoria 85 (1):8-17.
    We take an argument of Gödel's from his ground‐breaking 1931 paper, generalize it, and examine its validity. The argument in question is this: "the sentence G says about itself that it is not provable, and G is indeed not provable; therefore, G is true".
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  26. Formality of logic and Frege’s Begriffsschrift.Daniele Mezzadri - 2019 - Canadian Journal of Philosophy 49 (2):182-207.
    This paper challenges a standard interpretation according to which Frege’s conception of logic (early and late) is at odds with the contemporary one, because on the latter’s view logic is formal, while on Frege’s view it is not, given that logic’s subject matter is reality’s most general features. I argue that Frege – in Begriffsschrift – retained the idea that logic is formal; Frege sees logic as providing the ‘logical cement’ that ties up together the contentful concepts of specific sciences, (...)
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  27. Oskari Kuusela, Wittgenstein on Logic as the Method of Philosophy: Re‐examining the Roots and Development of Analytic Philosophy . xi + 297, £55.00 hb. [REVIEW]Alessio Persichetti - 2019 - Philosophical Investigations 42 (4):424-427.
  28. On Certain Axiomatizations of Arithmetic of Natural and Integer Numbers.Urszula Wybraniec-Skardowska - 2019 - Axioms 2019 (Deductive Systems).
    The systems of arithmetic discussed in this work are non-elementary theories. In this paper, natural numbers are characterized axiomatically in two di erent ways. We begin by recalling the classical set P of axioms of Peano’s arithmetic of natural numbers proposed in 1889 (including such primitive notions as: set of natural numbers, zero, successor of natural number) and compare it with the set W of axioms of this arithmetic (including the primitive notions like: set of natural numbers and relation of (...)
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  29. Frege on Dichtung and Elucidation.Gisela Bengtsson - 2018 - In Gisela Bengtsson, Simo Säätelä & Alois Pichler (eds.), New Essays on Frege: Between Science and Literature. Cham, Switzerland: Springer. pp. 101-119.
    In this paper, I identify an assumption at play in anti-semantic interpretative approaches to Frege: the notion that translatability to Frege’s concept script functions as a criterion for deciding whether a thought is expressed in a sentence or utterance. I question the viability of this assumption by pointing to Frege’s accounts of the aim and character of his logical language and scientific discourse more generally, and by looking at his remarks on poetic forms of language, literature and fiction (Dichtung). Since (...)
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  30. Husserl on completeness, definitely.Mirja Hartimo - 2018 - Synthese 195 (4):1509-1527.
    The paper discusses Husserl’s notion of definiteness as presented in his Göttingen Mathematical Society Double Lecture of 1901 as a defense of two, in many cases incompatible, ideals, namely full characterizability of the domain, i.e., categoricity, and its syntactic completeness. These two ideals are manifest already in Husserl’s discussion of pure logic in the Prolegomena: The full characterizability is related to Husserl’s attempt to capture the interconnection of things, whereas syntactic completeness relates to the interconnection of truths. In the Prolegomena (...)
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  31. Husserl's Logical Grammar.Ansten Klev - 2018 - History and Philosophy of Logic 39 (3):232-269.
    Lecture notes from Husserl's logic lectures published during the last 20 years offer a much better insight into his doctrine of the forms of meaning than does the fourth Logical Investigation or any other work published during Husserl's lifetime. This paper provides a detailed reconstruction, based on all the sources now available, of Husserl's system of logical grammar. After having explained the notion of meaning that Husserl assumes in his later logic lectures as well as the notion of form of (...)
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  32. The totality of predicates and the possibility of the most real being.Srećko Kovač - 2018 - Journal of Applied Logics - The IfCoLog Journal of Logics and Their Applications 5 (7):1523-1552.
    We claim that Kant's doctrine of the "transcendental ideal of pure reason" contains, in an anticipatory sense, a second-order theory of reality (as a second-order property) and of the highest being. Such a theory, as reconstructed in this paper, is a transformation of Kant's metatheoretical regulative and heuristic presuppositions of empirical theories into a hypothetical ontotheology. We show that this metaphysical theory, in distinction to Descartes' and Leibniz's ontotheology, in many aspects resembles Gödel's theoretical conception of the possibility of a (...)
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  33. Rejection in Łukasiewicz's and Słupecki's Sense.Wybraniec-Skardowska Urszula - 2018 - In Urszula Wybraniec-Skardowska & Ángel Garrido (eds.), The Lvov-Warsaw School. Past and Present. Cham, Switzerland: Springer- Birkhauser,. pp. 575-597.
    The idea of rejection originated by Aristotle. The notion of rejection was introduced into formal logic by Łukasiewicz. He applied it to complete syntactic characterization of deductive systems using an axiomatic method of rejection of propositions. The paper gives not only genesis, but also development and generalization of the notion of rejection. It also emphasizes the methodological approach to biaspectual axiomatic method of characterization of deductive systems as acceptance (asserted) systems and rejection (refutation) systems, introduced by Łukasiewicz and developed by (...)
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  34. Introduction. The School: Its Genesis, Development and Significance.U. Wybraniec-Skardowska - 2018 - In Urszula Wybraniec-Skardowska & Ángel Garrido (eds.), The Lvov-Warsaw School. Past and Present. Cham, Switzerland: Springer- Birkhauser,. pp. 3-14.
    The Introduction outlines, in a concise way, the history of the Lvov-Warsaw School – a most unique Polish school of worldwide renown, which pioneered trends combining philosophy, logic, mathematics and language. The author accepts that the beginnings of the School fall on the year 1895, when its founder Kazimierz Twardowski, a disciple of Franz Brentano, came to Lvov on his mission to organize a scientific circle. Soon, among the characteristic features of the School was its serious approach towards philosophical studies (...)
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  35. Rejection in Łukasiewicz's and Słupecki's Sense.Urszula Wybraniec-Skardowska - 2018 - In Urszula Wybraniec-Skardowska & Ángel Garrido (eds.), The Lvov-Warsaw School. Past and Present. Cham, Switzerland: Springer- Birkhauser,. pp. 575-597.
    The idea of rejection originated by Aristotle. The notion of rejection was introduced into formal logic by Łukasiewicz [20]. He applied it to complete syntactic characterization of deductive systems using an axiomatic method of rejection of propositions [22, 23]. The paper gives not only genesis, but also development and generalization of the notion of rejection. It also emphasizes the methodological approach to biaspectual axiomatic method of characterization of deductive systems as acceptance (asserted) systems and rejection (refutation) systems, introduced by Łukasiewicz (...)
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  36. Rejection in Łukasiewicz's and Słupecki' Sense.Urszula Wybraniec-Skardowska - 2018 - Lvov-Warsaw School. Past and Present.
    The idea of rejection originated by Aristotle. The notion of rejection was introduced into formal logic by Łukasiewicz [20]. He applied it to complete syntactic characterization of deductive systems using an axiomatic method of rejection of propositions [22, 23]. The paper gives not only genesis, but also development and generalization of the notion of rejection. It also emphasizes the methodological approach to biaspectual axiomatic method of characterization of deductive systems as acceptance (asserted) systems and rejection (refutation) systems, introduced by Łukasiewicz (...)
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  37. Para além das Colunas de Hércules, uma história da paraconsistência.Evandro Luis Gomes & Itala Maria Loffredo D'Ottaviano - 2017 - Campinas, Brazil: Editora da Unicamp.
  38. Husserl and gödel’s incompleteness theorems.Mirja Hartimo - 2017 - Review of Symbolic Logic 10 (4):638-650.
    The paper examines Husserl’s interactions with logicians in the 1930s in order to assess Husserl’s awareness of Gödel’s incompleteness theorems. While there is no mention about the results in Husserl’s known exchanges with Hilbert, Weyl, or Zermelo, the most likely source about them for Husserl is Felix Kaufmann (1895–1949). Husserl’s interactions with Kaufmann show that Husserl may have learned about the results from him, but not necessarily so. Ultimately Husserl’s reading marks on Friedrich Waismann’s Einführung in das mathematische Denken: die (...)
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  39. Štyri antické argumenty o budúcich nahodnostiach (Four Ancient Arguments on Future Contingencies).Vladimir Marko - 2017 - Bratislava, Slovakia: Univerzita Komenského.
    Essays on Aristotle's Sea-Battle, Lazy Argument, Argument Reaper, Diodorus' Master Argument -/- The book is devoted to the ancient logical theories, reconstruction of their semantic proprieties and possibilities of their interpretation by modern logical tools. The Ancient arguments are frequently misunderstood in modern interpretations since authors usually have tendency to ignore their historical proprieties and theoretical background what usually leads to a quite inappropriate picture of the argument’s original form and mission. Author’s primary intention was to draw attention to the (...)
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  40. The Logical Structure of Socrates’ Expert-Analogies.Petter Sandstad - 2017 - In Alessandro Stavru & Christopher Moore (eds.), Socrates and the Socratic Dialogue. Leiden: Brill. pp. 319-335.
    Socrates’ expert-analogies is frequent both in Plato’s dialogues and in the Socratic writings of Xenophon, and is also ascribed to Socrates by Aristotle and Aeschines. Socrates makes an analogy from a non-controversial expert (or an expertise) like the cobbler or ship-captain, to another (often controversial) expert (or expertise) like the statesman. This paper defends an interpretation of the expert-analogy as valid deductions. It infers from one type of expert (such as the ship-captain) to another type of expert (such as the (...)
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  41. The Sign of Consequence.Francesco Bellucci - 2016 - The Commens Encyclopedia: The Digital Encyclopedia of Peirce Studies.
    The “sign of consequence” is a notation for propositional logic that Peirce invented in 1886 and used at least until 1894. It substituted the “copula of inclusion” which he had been using since 1870.
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  42. Excerpt from the Doctrine of Reason by Georg Friedrich Meier.Lawrence Pasternack & Pablo Muchnik (eds.) - 2016 - Bloomsbury Academic.
    The aim of Kant’s Sources in Translation is to retrieve the rich intellectual world that influenced Kant’s philosophical development. In its first stage, the series makes available the most important textbooks Kant used throughout his long teaching career. Many of these textbooks are in Latin or in German and remain inaccessible to Anglophone readers. Lacking this material, however, it is difficult to appreciate Kant’s originality and process of philosophical maturation, for readers are unable to understand what prompted Kant to introduce (...)
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  43. Francis Bacon and the Laws of Ramus.Peter R. Anstey - 2015 - Hopos: The Journal of the International Society for the History of Philosophy of Science 5 (1):1-23.
    This article assesses the role of the laws of the French logician and educational reformer Petrus Ramus in the writings of Francis Bacon. The laws of Ramus derive from Aristotle’s grounds for necessary propositions. Necessary propositions, according to Aristotle, Ramus, and Bacon, are required for the premises of scientific syllogisms. It is argued that in Bacon’s Advancement of Learning and De augmentis scientiarum the only role for these laws is in the transmission of knowledge that has already been acquired. However, (...)
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  44. Ancient Logic (substantive revision Dec 29, 2015).Susanne Bobzien - 2015 - Stanford Encyclopedia of Philosophy.
    ABSTRACT: A comprehensive introduction to ancient (western) logic from earliest times to the 6th century CE, with an emphasis on topics which may be of interest to contemporary logicians.
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  45. Towards a Historical Notion of ‘Turing—the Father of Computer Science’.Edgar G. Daylight - 2015 - History and Philosophy of Logic 36 (3):205-228.
    In the popular imagination, the relevance of Turing's theoretical ideas to people producing actual machines was significant and appreciated by everybody involved in computing from the moment he published his 1936 paper ‘On Computable Numbers’. Careful historians are aware that this popular conception is deeply misleading. We know from previous work by Campbell-Kelly, Aspray, Akera, Olley, Priestley, Daylight, Mounier-Kuhn, Haigh, and others that several computing pioneers, including Aiken, Eckert, Mauchly, and Zuse, did not depend on Turing's 1936 universal-machine concept. Furthermore, (...)
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  46. Logic Gallery.David Marans - 2015 - Great Britan: HUMBOX.
  47. Frege on the Normativity and Constitutivity of Logic for Thought I.Daniele Mezzadri - 2015 - Philosophy Compass 10 (9):583-591.
    This two-part paper reviews a scholarly debate on an alleged tension in Frege ’s philosophy of logic. In Section 1 of Part I, I discuss Frege ’s view that logic is concerned with establishing norms for correct thinking and is therefore a normative science. In Section 2, I explore a different understanding of the role of logic that Frege seems to advance: logic is constitutive of the very possibility of thought, because it sets forth necessary conditions for thought. Hence, the (...)
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  48. Johannes de Raey and the Cartesian Philosophy of Language.Andrea Strazzoni - 2015 - Lias. Journal of Early Modern Intellectual Culture and its Sources 42 (2):89-120.
    This article offers an account of the philosophy of language expounded in the Cogitata de interpretatione (1692) of the Dutch philosopher Johannes De Raey (1620-1702). In this work, De Raey provided a theory of the formation and meaning language based on the metaphysics of René Descartes. De Raey distinguished between words signifying passions and sensations, ideas of the intellect, or external things. The aim of this article is to shift away the discussion of De Raey’s critique on the application of (...)
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  49. Deduction and Novelty Again.Danny Frederick - 2014 - The Reasoner 8 (5):51-52.
    It is commonly claimed that the conclusion of a valid deductive argument is contained in its premises and says nothing new. In 'Deduction and Novelty,' in The Reasoner 5 (4), pp. 56-57, I refuted that claim. In The Reasoner, 8 (3), pp. 24-25, David McBride criticised my refutation. I show that McBride’s arguments are unsound.
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  50. Mill's System of Logic.David Godden - 2014 - In W. J. Mander (ed.), Oxford handbook of British philosophy in the nineteenth century. Oxford University Press. pp. 44-70.
    This chapter situates Mill’s System of Logic (1843/1872) in the context of some of the meta-logical themes and disputes characteristic of the 19th century as well as Mill’s empiricism. Particularly, by placing the Logic in relation to Whately’s (1827) Elements of Logic and Mill’s response to the “great paradox” of the informativeness of syllogistic reasoning, the chapter explores the development of Mill’s views on the foundation, function, and the relation between ratiocination and induction. It provides a survey of the Mill-Whewell (...)
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