During the 13th century, several logicians in the Latin medieval tradition showed a special interest in the nature of impossibility, and in the different kinds or ‘degrees’ of impossibility that could be distinguished. This discussion resulted in an analysis of the modal concept with a fineness of grain unprecedented in earlier modal accounts. Of the several divisions of the term ‘impossible’ that were offered, one became particularly relevant in connection with the debate on ars obligatoria and positio impossibilis: the distinction (...) between ‘intelligible’ and ‘unintelligible’ impossibilities. In this article, I consider some 13th-century tracts on obligations that provide an account of the relation between impossibility and intelligibility and discuss the inferential principles that are permissible when we reason from an impossible – but intelligible – premise. I also explore the way in which the 13th-century reflection on this topic survives, in a revised form, in some early 14th-century accounts of positio, namely, those of William of Ockham, Roger Swineshead and Thomas Bradwardine. (shrink)

Bazzocchi disposes the text of the Tractatus in a user-friendly manner, exactly as Wittgenstein's decimals advise. This discloses the logical form of the book by distinct reading units, linked into a fashioned hierarchical tree. The text becomes much clearer and every reader can enjoy, finally, its formal and literary qualities.

Bazzocchi disposes the text of the Tractatus in a user-friendly manner, exactly as Wittgenstein's decimals advise. This discloses the logical form of the book by distinct reading units, linked into a fashioned hierarchical tree. The text becomes much clearer and every reader can enjoy, finally, its formal and literary qualities.

In the Tractatus Wittgenstein criticizes Frege and Russell's view that laws of inference (Schlussgesetze) "justify" logical inferences. What lies behind this criticism, I argue, is an attack on Frege and Russell's conceptions of logical entailment. In passing, I examine Russell's dispute with Bradley on the question whether all relations are "internal".

The author analyzes the inner structure of the philosophy of the Tractatus rather than its relation to the views of other philosophers.

The text of The Tractatus supports incompatible interpretations of a number of key philosophic positions. For example, the book is neither obviously nominalistic nor obviously realistic. Another difficulty is presented by the apparent. incompatibility of Wittgenstein's theses that propositions are logical pictures of facts, and that propositions are truth-functions of elementary propositions. There are several places in The Tractatus where these two doctrines meet head on, but the central one is the set of passages 5.54-5.5422. This paper is (...) an exegesis of these passages and a sketch of Wittgenstein's theory of judgement.In Tractatus 5.54 - 5.5422, Wittgenstein argues that statements of belief, judgement, thoughts and the like are not incompatible with the principle of finite extensionality. The passages contain a brief but obscure reductio on the possibility of non-extensional contexts, and several no less obscure corollaries. In this paper I shall explicate the content of the reductio, criticise a common but mistaken view of these passages, and draw out the consequences of some major doctrines in the Tractatus for Wittgenstein's Theory of Judgement. (shrink)

Tractatus Logico-Philosophicus by Ludwig Wittgenstein: three parallel tree-structured editions. (1) Tree-structured arrangement of the German text, edited by David G. Stern, Joachim Schulte and Katia Saporiti. (2) Tree-structured arrangement of the English translation by Ogden and Ramsey, edited by David G. Stern. (3) Tree-structured arrangement of the English translation by Pears and McGuinness, edited by David G. Stern.

The book includes an Index of Subjects and a detailed Index of Biblical References as well as an Introduction by Brad Gregory, which sets Spinoza squarely in ...

This new and complete translation of Spinoza's famous 17th-century work fills an important gap, not only for all scholars of Spinoza, but also for everyone interested in the relationship between Western philosophy and religion, and the history of biblical exegesis.

Perhaps the most important work of philosophy written in the twentieth century, the Tractatus Logico-Philosophicus first appeared in 1921 and was the only philosophical work that Ludwig Wittgenstein (1889-1951) published during his lifetime. Written in short, carefully numbered paragraphs of extreme compression and brilliance, it immediately convinced many of its readers and captivated the imagination of all. Its chief influence, at first, was on the Logical Positivists of the 1920s and 30s, but many other philosophers were stimulated by its (...) philosophy of language, finding attractive, if ultimately unsatisfactory, its view that propositions were pictures of reality. Perhaps most of all, Wittgenstein himself, after his return to philosophy in the late 1920s, was fascinated by its vision of an inexpressible, crystalline world of logical relationships. The posthumous publication of other writings has, therefore, only served to reawaken interest in the Tractatus and to illuminate its more neglected aspects. David Pears and Brian McGuinness revised their translation in the light of Wittgenstein's own suggestions and comments in his correspondence with C.K. Ogden about the first translation. In addition, this edition contains the introduction by Bertrand Russell which appeared in the original English translation. (shrink)

I discuss the account of logical consequence advanced in Wittgenstein's Tractatus. I argue that the role that elementary propositions are meant to play in this account can be used to explain two remarkable features that Wittgenstein ascribes to them: that they are logically independent from one another and that their components refer to simple objects. I end with a proposal as to how to understand Wittgenstein's claim that all propositions can be analysed as truth functions of elementary propositions.

"Ludwig Wittgenstein's brief Tractatus Logico-Philosophicus is one of the most important philosophical works of the Twentieth Century, yet it offers little orientation for the reader. The first-time reader is left wondering what it could be about, and the scholar is left with little guidance for interpretation. In Tractatus in Context, James C. Klagge presents the vital background necessary for appreciating Wittgenstein's gnomic masterpiece. Tractatus in Context contains the early reactions to the Tractatus, including the initial reviews (...) written in 1922-1924. And while we can't talk with Wittgenstein, we can do the next best thing-hear what he had to say about the Tractatus. Klagge thus presents what Wittgenstein thought about germane issues leading up to his writing the book, in discussions and correspondence with others about his ideas, and what he had to say about the Tractatus after it was written-in letters, lectures and conversations. It offers, you might say, Wittgenstein's own commentary on the book. Key Features: Illuminates what is at stake in the Tractatus, by providing the views of others that engaged Wittgenstein as he was writing it. Includes Wittgenstein's earlier thoughts on ideas in the book as recorded in his notebooks, letters, and conversations as well as his later, retrospective comments on those ideas. Draws on new or little-known sources, such as Wittgenstein's coded notebooks, Hermine's notes, Frege's letters, Hänsel's diary, Ramsey's notes, and Skinner's dictations. Draws connections between the background context and specific passages in the Tractatus, using a proposition-by-proposition commentary"--. (shrink)

ABSTRACT I argue that some of the central doctrines of Wittgenstein's Tractatus Logico-Philosophicus can be seen as addressing the twin problems of semantic unity and...

Tractatus Politico-Philosophicus (Political-Philosophical Treatise) aims to establish the principles of good governance and of a happy society, and to open up new directions for the future development of humankind. W. Julian Korab-Karpowicz demonstrates the necessity of, and provides a guide for, the redirection of humanity. He argues that this paradigm shift must involve changing the character of social life and politics from competitive to cooperative, encouraging moral and intellectual virtues, providing foundations for happy societies, promoting peace among countries and (...) building a strong international community. (shrink)

[1]. Liber V, De varietate legum humanarum et praesertim de odiosis --- [2]. Liber VI, de interpretatione, cessatione et mutatione legis humanae.

The notion of the riddle plays a pivotal role in Wittgenstein’s Tractatus . By examining the comparisons he draws between philosophical problems and riddles, this paper offers a reassessment of the aims and methods of the book. Solving an ordinary riddle does not consist in learning a new fact; what it requires is that we transform the way we use words. Similarly, Wittgenstein proposes to transform the way philosophers understand the nature of their problems. But since he holds that (...) these problems are ultimately unsolvable, rather than attempting to solve the riddles of philosophy, he aims to dissolve them. (shrink)

Reading the Tractatus. And appreciating it The reception history of Wittgenstein’s Tractatus Logico-Philosophicus displays an impressive and persistent diversity. This paper explores possible sources of that diversity and locates them in different takes on the text and its context of origin, and in different perspectives of the readers. This hermeneutics is illustrated by a comparison of two views on the importance of ethics for an understanding of the Tractatus: that of Cora Diamond and the one developed by (...) the authors in previous work. (shrink)

On many interpretations of Spinoza’s political philosophy, democracy emerges as his ideal type of government. But a type of government can be ideal and yet it can be unwise to implement it if certain background conditions obtain. For example, a dominion’s people can be too ‘wretched by the conditions of slavery’ to rule themselves. This begs the following question. Do Spinoza’s arguments for democracy entail that all political bodies should be democracies at all times (the received view), or do they (...) merely entail that we should only have a democracy when the right sort of background conditions are in place (the challenging view)? This paper argues that a new interpretation of one of the four versions of the rationality argument for democracy as it features in the Tractatus entails that the received view is correct. The paper also explains away part of the appeal of the challenging view by arguing that none of the other versions of the rationality argument supports the received view. It closes by arguing that a slightly modernised version of the rationality argument can be important for contemporary political philosophy. (shrink)

Wittgenstein's conception of the general form of a truth function given in thesis 6 can be presented as a sort of a trade-off: the author of the Tractatus is unable to reconcile the simplicity of his original idea of a series of forms with the simplicity of his generalisation of Sheffer's stroke; therefore, he is forced to sacrifice one of them. As we argue in this paper, the choice he makes – to weaken the logical constraints put on the (...) concept of a series of forms, thus effectively metaphorising that concept for the sake of upholding the N-operation's role of generating the series – is unfortunate. An actual expansion of a series of truth functions as defined in 6 would require either making decisions at each step (Anscombe) or outwardly rejecting the concept of a series (Sundholm). However, neither is faithful to Wittgenstein's own fundamental intuitions regarding the nature of logic. For this reason, a different trade-off that prioritises upholding the basic features of a series of forms over the simplicity of the operation that generates that series seems to be much more reasonable. We offer such a trade-off by developing the schema already present in the Tractatus (5.101). The key element of our alternative solution is the construction of an operation that can perform the task of producing all consecutive truth functions of a given collection of atomic propositions as an invariant difference between any base and its successor throughout the series. We define it as a composition of three functions (in an algebraic sense): the first turns a symbol of a given truth function into a binary number, the second increments that number, the third turns the result back into a symbol of another truth function. We also show how the operation can be defined by means of a different notation without invoking binary arithmetic. (shrink)

In this article I construe Russell's definite description notation as a fragment of an "ideal language"– a language in which, as Russell puts it in the "Logical Atomism" lectures, "the words in a proposition correspond one by one with the components of the corresponding fact." Russell's notation – containing as it does variables, quantifiers and the identity sign – commits him to an ontology that is lavish indeed. It thus conflicts with the spirit of the theory of descriptions, which is (...) developed in the service of ontological frugality. I make use of arguments derived from the Tractatus to show that an ideal language need not contain logical signs. I thus defend the spirit of the theory of descriptions while departing from its letter. (shrink)

Le premier Wittgenstein expose dans le Tractatus une philosophie des sciences marquée par le conventionnalisme complété d’un certain vérificationnisme assuré par la logique de l’ Abbildung. Pour autant il ne développe aucune idéologiste scientiste. A partir de 1929, sa philosophie prend un tournant grammatical : la « grammaire » de la science comporte non seulement les lois logiques, mais aussi la partie théorique des sciences de la nature. L’assimilation des grandes théories (Copernic, Darwin, Freud) à des « vues synoptiques (...) » rassemblant une quantité de phénomènes, comme les paradigmes de Kuhn, n’empêche pas Wittgenstein de donner à sa philosophie le tour d’un incontestable réalisme (au sens de Cora Diamond). La dernière partie de ce texte essaie d’apprécier, à partir de Wittgenstein, les différences et les relations entre science et philosophie dans le naturalisme contemporain. (shrink)

It is argued that Wittgenstein’s remarks 6.2-6.22 Tractatus fare well when one focuses on non-quantificational arithmetic, but they are problematic when one moves to quantificational arithmetic.

This paper is divided in four parts. In the first part we introduce the method of internal critique of philosophical theories by examination of their external consistency with scientific theories. In the second part two metaphysical and one epistemological postulate of Wittgenstein's Tractatus are made explicit and formally expressed. In the third part we examine whether Tractarian metaphysical and epistemological postulates (the independence of simple states of affairs, the unique mode of their composition, possibility of complete empirical knowledge) are (...) externally consistent with the theory of quantum mechanics. The result of the inquiry is negative: Tractarian postulates ought to be be revised. Relying on the result we approach the question of the empirical character of logic in the fourth part. The description of theoretical transformations of the notion of disjunction, in its ontological, epistemological, and logical sense, is a common element of in all parts of the text. The conjecture on the existence of different types of disjunctive connectives in the language of quantum mechanics concludes the paper. (shrink)

Tractatus Politico-Philosophicus (Political-Philosophical Treatise) is an original work of political philosophy that aims to establish the principles of the good state and of a happy society, and to open up new directions for the future development of humankind. It is also, in part, a response to the Tractatus Logico-Philosophicus of Ludwig Wittgenstein. The main objective of the book is to demonstrate the necessity of, and provide a guide for, the redirection of humanity. I argue that this paradigm shift (...) must involve changing the character of social life and politics from competitive to cooperative, encouraging moral and intellectual virtues, providing foundations for happy societies, promoting peace among countries and building a strong international community. (shrink)

Je pose une question concernant la place du Tractatus de Wittgenstein dans la tradition éthique. Le Tractatus et la tradition éthique Les remarques que je ferai sont à considérer dans le contexte d'une interprétation du Tractatus qui a été qualifiée de lecture résolue de cette œuvre, ainsi que de la philosophie de Wittgenstein en général Comme l'a écrit Cora Diamond, le Tractatus travaille sur la libération des besoins et des désirs philosophiques, une libération de la philosophie (...) effectuée avec des outils philosophiques : la situation du Tractatus est similaire à celle évoquée dans les Recherches et dans l'œuvre ultérieure, qui se consacre également au projet de se libérer de la philosophie pour le bien de la philosophie. (shrink)

As a celebration of theTractatus100th anniversary it might be worth revisiting its relation to the later writings. From the former to the latter, David Pears recalls that “everyone is aware of the holistic character of Wittgenstein’s later philosophy, but it is not so well known that it was already beginning to establish itself in theTractatus” (The False Prison, 1987). From the latter to the former, Stephen Hilmy’s (The Later Wittgenstein, 1987) extensive study of theNachlasshas helped removing classical misconceptions such as (...) Hintikka’s claim that “Wittgenstein in thePhilosophical Investigationsalmost completely gave up the calculus analogy.” Hilmy points out that even in theInvestigationsone finds the use of the calculus/game paradigm to the understanding of language, such as “in operating with the word” (Part I, §559) and “it plays a different part in the calculus”. Hilmy also quotes from a late (1946) unpublished manuscript (MS 130) “this sentence has use in the calculus of language”, which seems to be compatible with “asking whether and how a proposition can be verified is only a particular way of asking ‘How do you mean?’” Central in this back and forth there is an aspect which seems to deserve attention in the discussion of a semantics for the language of mathematics which might be based on (normalisation of) proofs and/or Hintikka/Lorenzen game-dialogue: the explication of consequences. Such a discussion is substantially supported by the use of the open and searchableThe Wittgenstein Archives at the University of Bergen. These findings are framed within the discussion of the meaning of logical constants in the context of natural deduction style rules of inference. (shrink)

The Tractatus Logico-Philosophicus first appeared in 1921 and was the only philosophical work that Ludwig Wittgenstein (1889-1951) published during his lifetime. Written in short, carefully numbered paragraphs of extreme compression and brilliance, it immediately convinced many of its readers and captured the imagination of all. Its chief influence, at first, was on the Logical Positivists of the 1920s and 1930s, but many other philosophers were stimulated by its philosophy of language, finding attractive, even if ultimately unsatisfactory, its view that (...) propositions were pictures of reality. Perhaps most of all, its own author, after his return to philosophy in the late 1920s, was fascinated by its vision of an inexpressible, crystalline world of logical relationships. C.K. Ogden's translation of the Tractatus Logico-Philosophicus has a unique provenance. As revealed in Letters of C.K. Ogden (1973) and in correspondence in The Times Literary Supplement , Wittgenstein, Ramsey and Moore all worked with Ogden on the translation, which had Wittgenstein's complete approval. The very name Tractatus Logico-Philosophicus was of Ogden's devising; and there is very strong feeling among philosophers that, among the differing translations of this work, Ogden's is the definitive text - and Wittgenstein's version of the English equivalent of his Logisch-Philosophische Abhandlung. (shrink)

En el presente artículo, me centraré únicamente en la ontología del Tractatus porque, a pesar de ser uno de los temas que abandona después de 1930, tiene dos aspectos que quisiera resaltar de manera especial: su carácter relacional, y su afirmación de la contingencia del mundo. Considero que ambos son de interés en sí mismos por su carácter inédito, pero creo, además, que es posible establecer sugerentes relaciones entre ellos y algunas posiciones contemporáneas, tanto de las ciencias naturales como (...) de las ciencias sociales. En el primer caso, haré referencia al libro recientemente publicado de Friedrich Hülster, Introduction to Wittgenstein´s Tractatus Logico-Philosophicus. Para el segundo, tomaré como punto de partida Radical Uncertainty, publicado el año pasado por John Kay y Marvyn King. (shrink)

The philosophy of arithmetic of Wittgenstein's Tractatus is outlined and the central role played in it by the general notion of operation is pointed out. Following which, the language, the axioms and the rules of a formal theory of operations, extracted from the Tractatus, are presented and a theorem of interpretability of the equational fragment of Peano's Arithmetic into such a formal theory is proven.

Wittgenstein’s Tractatus is one of the most important philosophical works of the Twentieth Century, yet it is brief and offers little orientation for the reader. This causes two problems: The first-time reader is left wondering what it could be about, and often leaves off reading in frustration after a few pages. The scholar is left with little guidance for interpretation. This paper recounts selected material from my book Tractatus in Context. While the book includes familiar material from Wittgenstein’s (...) notebooks and letters, it also includes lesser-known material such as untranslated correspondence and notebook entries, later lectures and dictations, notes from Ramsey, and previously unknown reviews. Some of the topics to be examined are: simple objects, atomic facts and elementary propositions, limits and boundaries, superstition, the shape of the visual field, and the role of the will. Given the occasion, I’ll also focus on some ways in which conversations with the Vienna Circle help illuminate obscure passages in the Tractatus. (shrink)

In the Tractatus Logico-Philosophicus Wittgenstein writes:2.022 It is obvious that an imagined world, however different it may be from the real one, must have something – a form – in common with it.2.023 Objects are just what constitute this unalterable form.As F.P. Ramsey pointed out, in his insightful review of the Tractatus, it is evident:[i]that Wittgenstein is here envisaging a multitude of possible worlds other than the real one;[ii]that Wittgenstein is claiming that, notwithstanding their diversity, all such worlds (...) have a common form; and[iii]that Wittgenstein believes this form to be somehow 'constituted' by the simple objects that exist in these worlds. (shrink)

In the Tractatus Logico-Philosophicus Wittgenstein writes:2.022 It is obvious that an imagined world, however different it may be from the real one, must have something – a form – in common with it.2.023 Objects are just what constitute this unalterable form.As F.P. Ramsey pointed out, in his insightful review of the Tractatus, it is evident:[i]that Wittgenstein is here envisaging a multitude of possible worlds other than the real one;[ii]that Wittgenstein is claiming that, notwithstanding their diversity, all such worlds (...) have a common form; and[iii]that Wittgenstein believes this form to be somehow 'constituted' by the simple objects that exist in these worlds. (shrink)

A collection of discussions of possible influences on Wittgenstein when he was writing the Tractatus, includes treatments of Reinach and Meinong.

Ludwig Wittgenstein’s _Tractatus Logico-Philosophicus_ is among the most ambitious and influential philosophical works of the early twentieth century, and in recent years it has again occupied a central position in discussions of Wittgenstein’s philosophy. Written in an austere and meticulous style, the _Tractatus_ addresses questions in the philosophy of language, logic, and metaphysics, and, according to its author, provides a solution to all the problems of philosophy. This Broadview Edition contains the original English translation by C.K. Ogden and Frank P. (...) Ramsey, annotated and revised by the editor for improved accuracy and clarity. Appendices include important material by Gottlob Frege and Bertrand Russell, as well as excerpts from Wittgenstein’s other writings. (shrink)

In the Tractatus Wittgenstein claims that a sentence expresses the same proposition in every possible world and, hence, which proposition is expressed cannot depend on how each world is. In this paper, I shall explore the interpretation of this thesis under the perspective of Stalnaker’s theory of assertions as the reduction of the context set, i.e., the set of possible worlds compatible with the information gathered at a conversation. In Stalnaker’s version, this principle follows from the explication of assertions (...) as having the illocutionary point of excluding some possible worlds from the context set. If there is no unique instruction to exclude some worlds, then it is not clear which reduction is meant by the speaker. This might lead to a better understanding of Wittgenstein’s own version. (shrink)

The paper analyzes the conception of free will defended by the Tractatus, and in contrast to Pasquale Frascolla’s recent verificationist reading of 5.1362, it argues that Wittgenstein’s conception of free will squarely places future contingencies within the boundaries of truth-conditional semantics.