"One of the most impressive pieces of scholarship I have ever encountered."-W. E. Kennick, Amherst College There is nothing in the literature on the Philosophical Investigations comparable to this learned and exhaustive commentary. Offering both information and interpretation, it is a remarkable book that fills a recognized need for a close study of one of the world's major works of philosophy. After a general introduction, Father Hallett divides the text of the Investigations into forty-one units, and then provides an introduction (...) to each section, along with detailed comments on individual paragraphs, statements, and expressions. His use of paragraph numbers in the general introduction and in the sectional introductions permits ready reference downward, for detailed development or illustration of a general observation, or upward, from a particular passage to its wider context. To clarify the philosophical point of Wittgenstein's remarks, Father Hallett makes frequent references to other parts of the Investigations; to Wittgenstein's other writings, both published and unpublished; and to the works which Wittgenstein knew and often had in mind, such as those of Frege, Russell, Moore, James, Augustine, Plato, Schlick, and Kohler. Father Hallett also cites and quotes secondary sources, and he includes an appendix relating Wittgenstein to more than 150 authors, particularly those of his own generation or earlier whom he read, or knew personally, and who are mentioned in this commentary. Written in straightforward and lucid prose, this outstanding book reveals continuities in Wittgenstein's thought over long periods of time. It is an indispensable guide for those preparing courses on the Investigations and a useful tool for students taking those courses. (shrink)

The question is raised of the source of the extreme verificationist views which Wittgenstein put forward immediately after his return to philosophy in 1929. Since these views appear to be radically different from the ideas put forward in theTractatus some explanation of this dramatic new turn in Wittgenstein''s thought certainly seems to be called for. Wittgenstein''s very low level of interest in philosophy between 1918 and shortly before his return to philosophy is documented. Attention then focuses on the crucial period (...) immediately before Wittgenstein''s return to Cambridge, and it is shown that in this period he encountered only two new philosophical influences. These were the ideas of Brouwer and the ideas of the Vienna Circle. Each of these is examined and neither is found capable of providing an explanation of the source of Wittgenstein''s verificationism. This leads to a reconsideration of the underlying assumption that Wittgenstein''s verificationism does represent the radical departure from the ideas of theTractatus which it appears to. It is argued that the only way we can account for Wittgenstein''s evident approval of the reading of theTractatus which he must have encountered in his meetings with members of the Vienna Circle is by concluding that, far from being incompatible with his earlier ideas, some form of verificationism must always have been implicit in theTractatus. (shrink)

Emphasis in historiography of science is naturally placed on the discoveries and inventions which scientists make and generally less on new methods of doing science, but sometimes the latter can he an important clue to help us understand the former. For example, while we all acknowledge how great the contributions of Maxwell, Boltzmann, Planck, and Einstein were to physics from roughly 1870 to 1920, we often overlook the significance of a methodological phrase which was popular during that same period, namely, (...) what in German was called “Bildtheorie” or in English “picture theory”. But even before we can properly study its significance we have to know what the theory was, but even this presents problems, since the meaning changed. In fact, this paper is an attempt not only to describe the history of that change from Maxwell to Wittgenstein but to study in particular how Boltzmann’s conception of Bildtheorie seems to have been at least partly incorporated into the approach of Ludwig Wittgenstein. (shrink)

What has become generally known as the Berlin School of Logical Empiricism constitutes a philosophical movement that was erected on foundations laid by Albert Einstein. His revolutionary work in physics had a profound impact on philosophers interested in scientific issues, prominent among them Paul Oppenheim and Hans Reichenbach, the founding fathers of the school, who joined in viewing him as their hero among philosopher-scientists. Overall the membership of this school falls into three groups. The founding generation was linked by the (...) circumstance that both Grelling and Reichenbach were collaborators of Oppenheim; the middle generation by the fact that both Hempel and Helmer were students of Reichenbach's in Berlin; and the younger generation by the fact that all of its members were students and disciples either of Reichenbach's or of Hempel's in the USA. Three stages are at issue: an initial phase in Berlin, a transatlantic migration, and a continuation in the U.S.A.--principally in Pittsburgh. (shrink)

Being Known is a response to a philosophical challenge which arises for every area of thought: to reconcile a plausible account of what is involved in the truth of statements in a given area with a credible account of how we can know those statements. Christopher Peacocke presents a framework for addressing the challenge, a framework which links both the theory of knowledge and the theory of truth with the theory of concept-possession.

I argue that Wittgenstein’s short-lived verificationism (c.1929-30) differed from that of his contacts in the Vienna Circle in not being a reductionist view. It lay the groundwork for his later views that the meaning of a word is determined by its use and that certain "propositions of the form of empirical propositions" (On Certainty, §§96, 401, 402) act as "norm[s] of description" (On Certainty,§§167, 321). He gave it up once he realized that it contradicted his rejection of logical atomism, and (...) that he ever held such a view at all says something about his respect for the leader of the Vienna Circle, Moritz Schlick. (shrink)

Pierre Duhem's often unrecognized influence on twentieth-century philosophy of science is illustrated by an analysis of his significant if also largely unrecognized influence on Albert Einstein. Einstein's first acquaintance with Duhem's La Théorie physique, son objet et sa structure around 1909 is strongly suggested by his close personal and professional relationship with Duhem's German translator, Friedrich Adler. The central role of a Duhemian holistic, underdeterminationist variety of conventionalism in Einstein's thought is examined at length, with special emphasis on Einstein's deployment (...) of Duhemian arguments in his debates with neo-Kantian interpreters of relativity and in his critique of the empiricist doctrines of theory testing advanced by Schlick, Reichenbach, and Carnap. Most striking is Einstein's 1949 criticism of the verificationist conception of meaning from a holistic point of view, anticipating by two years the rather similar, but more famous criticism advanced independently by Quine in Two Dogmas of Empiricism. (shrink)

Kant's original version of transcendental philosophy took both Euclidean geometry and the Newtonian laws of motion to be synthetic a priori constitutive principles—which, from Kant's point of view, function as necessary presuppositions for applying our fundamental concepts of space, time, matter, and motion to our sensible experience of the natural world. Although Kant had very good reasons to view the principles in question as having such a constitutively a priori role, we now know, in the wake of Einstein's work, that (...) they are not in fact a priori in the stronger sense of being fixed necessary conditions for all human experience in general, eternally valid once and for all. And it is for precisely this reason that Kant's original version of transcendental philosophy must now be either rejected entirely or radically reconceived. Most philosophy of science since Einstein has taken the former route: the dominant view in logical empiricism, for example, was that the Kantian synthetic a priori had to be rejected once and for all in the light of the general theory of relativity. (shrink)

This paper presents the main lines of reasoning in the Wittgenstein notes entitled ‘Cause and Effect: Intuitive Awareness,’ in the form of a series of dialogues between Wittgenstein, Russell, and a few other philosophical voices. Two of the dialogues relate to what, in Remarks on the Foundations of Mathematics, Wittgenstein called ‘the similarity of my treatment with relativity theory.’.

Since the first publication of Insight and Illusion in l972, a wealth of Wittgenstein's writings have become accessible. Accordingly, in this edition Professor Hacker has rewritten six of his eleven original chapters and revised the others to incorporate the new abundant material. Insight and Illusion now fully clarifies the historical backgrounds of Wittgenstein's highly different masterpieces, the Tractatus and the Investigations, and traces the evolution of Wittgenstein's thought. Hacker explains all of Wittgenstein's writings in detail, focusing on his critique of (...) metaphysics, his famous "private language argument," and his account of self-consciousness. (shrink)

Excerpt from Raum und Zeit in der Gegenwartigen Physik: Zur Einfuhrung in das Verstandnis der Relativitats-und Gravitationstheorie Die in dieser Schrift behandelte physikalische Theorie hat seit dem Erscheinen der zweiten Auflage eine wahr haft glanzende Bestatigung durch astronomische Beobach tungen gefunden (vergl. S. Sie hat dadurch die all gemeine Aufmerksamkeit in hohem Mae auf sich gelenkt und den Ruhm ihres Schopfers Einstein in noch hellerem Glanze erstrahlen lassen. So wird die grundlegende Be deutung der Relativitatstheorie fur unsere gesamte Natur auffassung (...) immer mehr von allen Seiten anerkannt, und es ist kein Zweifel, da sie binnen kurzem als Allgemeingut menschlich-wissenschaftlicher Weltanschauung gelten wird. Freilich, die Zahl derer, die diese erstaunliche Schopfung genialer Geisteskraft bewundern, ist weit schneller ge wachsen als die Zahl derer, die sie wirklich restlos ver stehen, und so hat sich das Bedurfnis nach aufklarenden Darstellungen der Grundlagen der Theorie nicht vermindert, sondern ist im Gegenteil im Steigen begriffen. Das zeigt sich auch darin, da die zweite Ausgabe dieser Schrift trotz hoherer Auflageziffer noch schneller erschopft war als die erste. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)

This major publication is a history of the semantic tradition in philosophy from the early nineteenth century through its incarnation in the work of the Vienna Circle, the group of logical positivists that emerged in the years 1925-1935 in Vienna who were characterised by a strong commitment to empiricism, a high regard for science, and a conviction that modern logic is the primary tool of analytic philosophy. In the first part of the book, Alberto Coffa traces the roots of logical (...) positivism in a semantic tradition that arose in opposition to Kant's theory that a priori knowledge is based on pure intuition and the constitutive powers of the mind. In Part II, Coffa chronicles the development of this tradition by members and associates of the Vienna Circle. Much of Coffa's analysis draws on the unpublished notes and correspondence of many philosophers. The book, however, is not merely a history of the semantic tradition from Kant 'to the Vienna Station'. Coffa also critically reassesses the role of semantic notions in understanding the ground of a priori knowledge and its relation to empirical knowledge and questions the turn the tradition has taken since Vienna. (shrink)

In questo articolo parlo della influenza di Einstein su Wittgenstein a partire da alcuni problemi che si pongono all’olismo. L’olismo è stato spesso collegato a Wittgenstein, almeno in forma di “olismo locale”. L’olismo è però soggetto a due tipi di paradossi: il paradosso della comunicazione per l’olismo semantico e il paradosso del relativismo concettuale per l’olismo epistemologico. Dopo aver presentato brevemente i due paradossi, confronto le risposte di Davidson, in difesa dell’olismo, con quelle di Wittgenstein (o di tipo wittgensteiniano). Da (...) questo confronto nasce un problema nell’interpretazione di Wittgenstein. Infatti, dalle sue risposte ai due paradossi emerge una tensione nella sua visione dei giochi linguistici e in particolare nei suoi esperimenti mentali, che sono stati tradizionalmente interpretati in modi contrapposti. La mia proposta è che una rilettura di alcune riflessioni di Wittgenstein su Einstein e la relatività può aiutare a cogliere meglio il significato di questa tensione. (shrink)

The connection between sense, verification, and mode of verification never entirely disappeared from Wittgenstein’s philosophy. However, there was a time – the years 1929– 1932 – when Wittgenstein upheld explicitly verificationist views: he identified a proposition’s meaning with the mode or method of its verification, and he said that to understand a proposition is to know how the proposition is verified. This has been regarded as puzzling, in view of the fact that the Tractatus is usually considered not to be (...) committed to verificationism; indeed, it is usually regarded as incompatible with verificationism. Several people have proposed to revise such a received view: Michael Wrigley (1989) has claimed that verificationism must be implicit in the Tractatus; and P. M.S. Hacker (1986) has argued that the Tractatus, though not verificationist, is not as distant from verificationism as it has been taken to be. In another paper (Marconi, forthcoming) I discuss their views. Here I will just notice that, even if one regards the Tractatus as implicitly verificationist, the problem remains of explaining why and how did Wittgenstein reach the explicitly – indeed, blatantly – verificationist outlook of the early Thirties. This is the first question I would like to try to answer in this paper. The second question is, why was such rampant verificationism short-lived? Or in other words, why was verificationism de-emphasized so that, although verificationist themes are undoubtedly present in the later Wittgenstein’s writings, the extreme formulations of the early Thirties tend to disappear after 1933? (shrink)