G. H. von Wright – författare

Wittgenstein's Tractatus Logico-Philosophicus, first published in 1921, has had a profound influence on modern philosophic thought. Prototractatus is a facsimile reproduction of an early version of Tractatus, only discovered in 1965. The original text has a parallel English translation and the text is edited to indicate all relevant deviations from the final version.

This substantially revised edition of Wittgenstein's Remarks on the Foundations of Mathematics contains one section, an essay of fifty pages, not previously published, as well as considerable additions to others sections. In Parts I, II and III, Wittgenstein discusses amongst other things the idea that all strict reasoning, and so all mathematics, are built on the 'fundamental calculus' which is logic. These parts give the most thorough discussion of Russell's logic. He writes on mathematical proof and the question of where the proofs of mathematics get their force and cogency, if they are not reducible to proofs in logic. Thsi leads him to discuss'contradiction in mathematics' and 'consistency proofs'. He works against the view that there is a sharp division between 'grammatical propositions' and 'empirical prepositions'. He asks us at one point to imagine a people who made no distinction between the applied mathematics and pure mathematics, although they counted and calculated. Could we say they had proofs? Here is a feature of his method which becomes more imporatnt; what Wittgenstein calls, at least half seriously, 'the anthropological method in philosophy'. This emerges in Parts V, VI and VIII. In Part VI, published here for the first time, Wittgenstein brings togeher the view that in mathematics proofs ae 'concept forming' and the view that language and logic and mathematics 'presuppose' common ways of acting and of living among the people who give tham and are convinced by them. Part VIII now has a fuller discussion of difficulties in the notion of 'following a rule' in calculation and the notion of logical necessity.

Zettel is a collection of fragments which Wittgenstein cut from various of his typescripts and preserved for future use. More than half of the fragments were written in the years 1946-1948, after the completion of Part I and before the composition of Part II of the Philosophical Investigations. This collection may therefore be regarded as a companion volume to the Investigations, adding to both the scope and the Unity of Wittgenstein's chef d'oeuvre.The fragments were kept in a box and were not strictly ordered. Many have marks showing changes and improvements made after they were cut from the typescripts; some have remarks added in handwriting. Editing the collection for publication was thus a task of considerable difficulty. Since Zettel was first published, further research has been carried out on the fragments and minute comparisons have been made with their typescript and manuscript sources, revealing certain inaccuracies and misinterpretations in the first editing of the work. The second edition corrects these shortcomings and includes new explanatory footnotes; a detailed index, compiled by Stephen Amdur, has also been added.

"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

A significant body of work from a 20th Century philosopherRemarks on the Philosophy of Psychology is an English translation of Ludwig Wittgenstein's writings on topics such as sensation and expectation. Wittgenstein was an Austrian-British philosopher who taught at the University of Cambridge. Considered one of the most important philosophers of the 20th century, he worked in the areas of logic and the philosophy of mathematics. This notable work features writings compiled by the philosopher between 1946 and 1949.

This collection contains hitherto unknown letters exchanged between Wittgenstein and the most important of his Cambridge friends and includes editorial notes based on archival material not previously explored. Incorporates many previously undiscovered unique and significant letters. A powerful record and intimate insight into Wittgenstein's life and thought. Extensive editorial annotations.

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.

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.

Completely revised throughout, Culture and Value is a selection from Wittgenstein's notebooks -- on the nature of art, religion, culture, and the nature of philosophical activity.

Completely revised throughout, Culture and Value is a selection from Wittgenstein's notebooks -- on the nature of art, religion, culture, and the nature of philosophical activity.