Perhaps the most important work of philosophy written in the twentieth century, Tractatus Logico-Philosophicus was the only philosophical work that Ludwig Wittgenstein published during his lifetime. Written in short, carefully numbered paragraphs of extreme brilliance, it captured the imagination of a generation of philosophers. For Wittgenstein, logic was something we use to conquer a reality which is in itself both elusive and unobtainable. He famously summarized the book in the following words: 'What can be said at all can be said clearly; and what we cannot talk about we must pass over in silence.' David Pears and Brian McGuinness received the highest praise for their meticulous translation. The work is prefaced by Bertrand Russell's original introduction to the first English edition.

When in May 1930, the Council of Trinity College, Cambridge, had to decide whether to renew Wittgenstein's research grant, it turned to Bertrand Russell for an assessment of the work Wittgenstein had been doing over the past year. His verdict: "The theories contained in this new work . . . are novel, very original and indubitably important. Whether they are true, I do not know. As a logician who likes simplicity, I should like to think that they are not, but from what I have read of them I am quite sure that he ought to have an opportunity to work them out, since, when completed, they may easily prove to constitute a whole new philosophy."

"[Philosophical Remarks] contains the seeds of Wittgenstein's later philosophy of mind and of mathematics. Principally, he here discusses the role of indispensable in language, criticizing Russell's The Analysis of Mind. He modifies the Tractatus's picture theory of meaning by stressing that the connection between the proposition and reality is not found in the picture itself. He analyzes generality in and out of mathematics, and the notions of proof and experiment. He formulates a pain/private-language argument and discusses both behaviorism and the verifiability principle. The work is difficult but important, and it belongs in every philosophy collection."—Robert Hoffman, Philosophy

"Any serious student of Wittgenstein's work will want to study his Philosophical Remarks as a transitional book between his two great masterpieces. The Remarks is thus indispensible for anyone who seeks a complete understanding of Wittgenstein's philosophy."—Leonard Linsky, American Philosophical Association

In 1933 Ludwig Wittgenstein revised a manuscript he had compiled from his 1930-1932 notebooks, but the work as a whole was not published until 1969, as Philosophische Grammatik. This first English translation clearly reveals the central place Philosophical Grammar occupies in Wittgenstein's thought and provides a link from his earlier philosophy to his later views.

Long awaited by the scholarly community, Wittgenstein's so-called Big Typescript (von Wright Catalog # TS 213) is presented here in an en face English–German scholar’s edition. Presents scholar’s edition of important material from 1933, Wittgenstein’s first efforts to set out his new thoughts after the publication of the Tractatus Logico Philosophicus Includes indications to help the reader identify Wittgenstein’s numerous corrections, additions, deletions, alternative words and phrasings, suggestions for moves within the text, and marginal comments

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Incorporating significant editorial changes from earlier editions, the fourth edition of Ludwig Wittgenstein's Philosophical Investigations is the definitive en face German-English version of the most important work of 20th-century philosophy
•The extensively revised English translation incorporates many hundreds of changes to Anscombes original translation
•Footnoted remarks in the earlier editions have now been relocated in the text
•What was previously referred to as Part 2 is now republished as Philosophy of Psychology A Fragment, and all the remarks in it are numbered for ease of reference
•New detailed editorial endnotes explain decisions of translators and identify references and allusions in Wittgenstein's original text
•Now features new essays on the history of the Philosophical Investigations, and the problems of translating Wittgensteins text

Product Description
This book comprises material on colour which was written by Wittgenstein in the last eighteen months of his life. It is one of the few documents which shows him concentratedly at work on a single philosophical issue. The principal theme is the features of different colours, of different kinds of colour (metallic colour, the colours of flames, etc.) and of luminosity--a theme which Wittgenstein treats in such a way as to destroy the traditional idea that colour is a simple and logically uniform kind of thing.
This edition consists of Wittgenstein's basic German text, together with an English translation.

Wittgenstein's work remains, undeniably, now, that off one of those few philosophers who will be read by all future generations.

"These two volumes must be welcomed in particular for the illumination they shed ... on Wittgenstein's already published discussions ... the characteristic deluge of examples, analogies, questions and challanges is as ever, maddening, provoking and thought-provoking, and with the earlier-published works they constitute not just the most detailed but also the best treatment of these profoundly important issues."
Kathleen Wilkes, Times Higher Education Supplement

Wittgenstein finished part 1 of the Philosophical Investigations in the spring of 1945. From 1946 to 1949 he worked on the philosophy of psychology almost without interruption. The present two-volume work comprises many of his writings over this period. Some of the remarks contained here were culled for part 2 of the Investigations; others were set aside and appear in the collection known as Zettel. The great majority, however, although of excellent quality, have hitherto remained unpublished.

This bilingual edition of the Remarks on the Philosophy of Psychology presents the first English translation of an essential body of Wittgenstein's work. It elaborates Wittgenstein's views on psychological concepts such as expectation, sensation, knowing how to follow a rule, and knowledge of the sensations of other persons. It also shows strong emphasis on the "anthropological" aspect of Wittgenstein's thought. Philosophers, as well as anthropologists, psychologists, and sociologists will welcome this important publication.

This first volume of Wittgenstein's "Last Writings on the Philosophy of Psychology" was written between October 1948 and March 1949, when the philosopher had moved to Dublin and was having one of his most fruitful working periods. He then finished work which he had begun in 1946 and which in its entirety constitutes the source material for Part II of the "Philosophical Investigations". When, later in 1949, Wittgenstein composed the manuscript for Part II he selected more than half the remarks for it from the Dublin manuscript. Although this material is a direct continuation of the writings which make up the two volumes of the "Remarks on the Philosophy of Psychology", it deserves more than they to be regarded as a "preliminary study" for the second part of Wittgenstein's "chef-d'oeuvre".

In the last years of his life, from 1949 to 1951, Wittgenstein's writings focused upon knowledge and certainty (collected together in On Certainty), upon colour concepts (in Remarks on Colour) and upon the relation between the "inner" and "outer", that is, between so-called mental states and bodily behavior. His writings on this third theme, now available in paperback, are gathered here for the first time. Wittgenstein's last weeks were a period of high creativity during which his thoughts were on a level with the best he ever produced. His variation on the classic philosophical theme of the relation between mind and body is no exception.

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Written over the last 18 months of his life and inspired by his interest in G. E. Moore's defence of common sense, this much discussed volume collects Wittgenstein's reflections on knowledge and certainty, on what it is to know a proposition for sure.

Zettel, an en face bilingual edition, collects fragments from Wittgenstein's work between 1929 and 1948 on issues of the mind, mathematics, and language.