Ludwig Josef Johann Wittgenstein ( ; ; 26 April 1889 – 29 April 1951) was an Austrian-
British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...
philosopher A philosopher is a person who practices or investigates philosophy. The term ''philosopher'' comes from the grc, φιλόσοφος, , translit=philosophos, meaning 'lover of wisdom'. The coining of the term has been attributed to the Greek th ...
who worked primarily in
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
, the
philosophy of mathematics The philosophy of mathematics is the branch of philosophy that studies the assumptions, foundations, and implications of mathematics. It aims to understand the nature and methods of mathematics, and find out the place of mathematics in people' ...
, the
philosophy of mind Philosophy of mind is a branch of philosophy that studies the ontology and nature of the mind and its relationship with the body. The mind–body problem is a paradigmatic issue in philosophy of mind, although a number of other issues are addre ...
, and the philosophy of language. He is considered by some to be the greatest philosopher of the 20th century. From 1929 to 1947, Wittgenstein taught at the
University of Cambridge , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...
. In spite of his position, during his entire life only one book of his philosophy was published, the 75-page ''Logisch-Philosophische Abhandlung'' (''Logical-Philosophical Treatise'', 1921), which appeared, together with an English translation, in 1922 under the Latin title ''
Tractatus Logico-Philosophicus The ''Tractatus Logico-Philosophicus'' (widely abbreviated and cited as TLP) is a book-length philosophical work by the Austrian philosopher Ludwig Wittgenstein which deals with the relationship between language and reality and aims to define the ...
''. His only other published works were an article, " Some Remarks on Logical Form" (1929); a book review; and a children's dictionary. His voluminous manuscripts were edited and published posthumously. The first and best-known of this posthumous series is the 1953 book ''
Philosophical Investigations ''Philosophical Investigations'' (german: Philosophische Untersuchungen) is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953. ''Philosophical Investigations'' is divided into two parts, consisting of what Wittgens ...
''. A survey among American university and college teachers ranked the ''Investigations'' as the most important book of
20th-century philosophy Contemporary philosophy is the present period in the history of Western philosophy beginning at the early 20th century with the increasing professionalization of the discipline and the rise of Analytic philosophy, analytic and continental philosop ...
, standing out as "the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations". His philosophy is often divided into an early period, exemplified by the ''Tractatus'', and a later period, articulated primarily in the ''Philosophical Investigations''. The "early Wittgenstein" was concerned with the logical relationship between propositions and the world, and he believed that by providing an account of the logic underlying this relationship, he had solved all philosophical problems. The "later Wittgenstein", however, rejected many of the assumptions of the ''Tractatus'', arguing that the
meaning Meaning most commonly refers to: * Meaning (linguistics), meaning which is communicated through the use of language * Meaning (philosophy), definition, elements, and types of meaning discussed in philosophy * Meaning (non-linguistic), a general ...
of words is best understood as their use within a given language game. Born in Vienna into one of Europe's richest families, he inherited a fortune from his father in 1913. Before World War I, he "made a very generous financial bequest to a group of poets and artists chosen by Ludwig von Ficker, the editor of ''Der Brenner'', from artists in need. These included Georg Trakl as well as
Rainer Maria Rilke René Karl Wilhelm Johann Josef Maria Rilke (4 December 1875 – 29 December 1926), shortened to Rainer Maria Rilke (), was an Austrian poet and novelist. He has been acclaimed as an idiosyncratic and expressive poet, and is widely recogn ...
and the architect Adolf Loos." Later, in a period of severe personal depression after World War I, he gave away his remaining fortune to his brothers and sisters. Three of his four older brothers died by separate acts of
suicide Suicide is the act of intentionally causing one's own death. Mental disorders (including major depressive disorder, depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic f ...
. Wittgenstein left academia several times: serving as an officer on the front line during World War I, where he was decorated a number of times for his courage; teaching in schools in remote Austrian villages, where he encountered controversy for using sometimes violent corporal punishment on girls and a boy (the Haidbauer incident) especially during mathematics classes; working during World War II as a hospital porter in London, notably telling patients not to take the drugs they were prescribed; and working as a hospital laboratory technician at the
Royal Victoria Infirmary The Royal Victoria Infirmary (RVI) is a 673-bed tertiary referral hospital and research centre in Newcastle upon Tyne, England, with strong links to Newcastle University. The hospital is part of the Newcastle upon Tyne Hospitals NHS Foundation ...
Newcastle upon Tyne Newcastle upon Tyne (Received Pronunciation, RP: , ), or simply Newcastle, is a City status in the United Kingdom, city and metropolitan borough in Tyne and Wear, England. The city is located on the River Tyne's northern bank and forms the la ...
. He later expressed remorse for these incidents, and spent the remainder of his life lecturing and attempting to prepare a second manuscript for publication, which was published posthumously as the hugely influential ''
Philosophical Investigations ''Philosophical Investigations'' (german: Philosophische Untersuchungen) is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953. ''Philosophical Investigations'' is divided into two parts, consisting of what Wittgens ...
''. An ardent critic of
modernity Modernity, a topic in the humanities and social sciences, is both a historical period (the modern era) and the ensemble of particular socio-cultural norms, attitudes and practices that arose in the wake of the Renaissancein the " Age of Reaso ...
and the scientism that he detected among his colleagues, he famously proclaimed in a remark published in '' Culture and Value'' —
It is all one to me whether or not the typical western scientist understands or appreciates my work, since he will not in any case understand the spirit in which I write. Our civilization is characterized by the word 'progress'. Progress is its form rather than making progress being one of its features. Typically it constructs. It is occupied with building an ever more complicated structure. And even clarity is sought only as a means to this end, not as an end in itself. For me on the contrary clarity, perspicuity are valuable in themselves. I am not interested in constructing a building, so much as having a perspicuous view of the foundations of possible buildings.
In the words of a friend and literary executor, Georg Henrik von Wright, he believed that —
His ideas were generally misunderstood and distorted even by those who professed to be his disciples. He doubted he would be better understood in the future. He once said he felt as though he was writing for people who would think in a different way, breathe a different air of life, from that of present-day men.


The Wittgensteins

According to a family tree prepared in Jerusalem after World War II, Wittgenstein's paternal great-great-grandfather was Moses Meier, a
Jewish Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""Th ...
land agent who lived with his wife, Brendel Simon, in Bad Laasphe in the Principality of Wittgenstein, Westphalia. In July 1808,
Napoleon Napoleon Bonaparte ; it, Napoleone Bonaparte, ; co, Napulione Buonaparte. (born Napoleone Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French military commander and political leader who ...
issued a decree that everyone, including Jews, must adopt an inheritable family surname, so Meier's son, also Moses, took the name of his employers, the
Sayn-Wittgenstein Sayn-Wittgenstein was a county of medieval Germany, located in the Sauerland of eastern North Rhine-Westphalia. History Sayn-Wittgenstein was created when Count Salentin of Sayn-Homburg, a member of the House of Sponheim, married the heiress Cou ...
s, and became Moses Meier Wittgenstein. His son, Hermann Christian Wittgenstein — who took the middle name "Christian" to distance himself from his Jewish background — married Fanny Figdor, also Jewish, who converted to Protestantism just before they married, and the couple founded a successful business trading in wool in Leipzig. Ludwig's grandmother Fanny was a first cousin of the violinist
Joseph Joachim Joseph Joachim (28 June 1831 – 15 August 1907) was a Hungarian violinist, conductor, composer and teacher who made an international career, based in Hanover and Berlin. A close collaborator of Johannes Brahms, he is widely regarded as one of t ...
. They had 11 children – among them Wittgenstein's father. Karl Otto Clemens Wittgenstein (1847–1913) became an industrial tycoon, and by the late 1880s was one of the richest men in Europe, with an effective monopoly on Austria's steel cartel. Thanks to Karl, the Wittgensteins became the second wealthiest family in the
Austro-Hungarian Empire Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of 1 ...
, only the
Rothschilds The Rothschild family ( , ) is a wealthy Ashkenazi Jewish family originally from Frankfurt that rose to prominence with Mayer Amschel Rothschild (1744–1812), a court factor to the German Landgraves of Hesse-Kassel in the Free City of Fr ...
being wealthier. Karl Wittgenstein was viewed as the Austrian equivalent of
Andrew Carnegie Andrew Carnegie (, ; November 25, 1835August 11, 1919) was a Scottish-American industrialist and philanthropist. Carnegie led the expansion of the American steel industry in the late 19th century and became one of the richest Americans in ...
, with whom he was friends, and was one of the wealthiest men in the world by the 1890s. As a result of his decision in 1898 to invest substantially in the Netherlands and in Switzerland as well as overseas, particularly in the US, the family was to an extent shielded from the hyperinflation that hit Austria in 1922. However, their wealth diminished due to post-1918 hyperinflation and subsequently during the Great Depression, although even as late as 1938 they owned 13 mansions in Vienna alone.

Early life

Wittgenstein's mother was Leopoldine Maria Josefa Kalmus, known among friends as Poldi. Her father was a
Bohemian Bohemian or Bohemians may refer to: *Anything of or relating to Bohemia Beer * National Bohemian, a brand brewed by Pabst * Bohemian, a brand of beer brewed by Molson Coors Culture and arts * Bohemianism, an unconventional lifestyle, origi ...
Jew Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...
and her mother was
Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ci ...
n- Slovene Catholic – she was Wittgenstein's only non-Jewish grandparent. She was an aunt of the Nobel Prize laureate
Friedrich Hayek Friedrich August von Hayek ( , ; 8 May 189923 March 1992), often referred to by his initials F. A. Hayek, was an Austrian–British economist, legal theorist and philosopher who is best known for his defense of classical liberalism. Haye ...
on her maternal side. Wittgenstein was born at 8:30  on 26 April 1889 in the "Villa Wittgenstein" at what is today Neuwaldegger Straße 38 in the suburban parish next to Vienna. Karl and Poldi had nine children in all – four girls: Hermine,
Margaret Margaret is a female first name, derived via French () and Latin () from grc, μαργαρίτης () meaning "pearl". The Greek is borrowed from Persian. Margaret has been an English name since the 11th century, and remained popular througho ...
(Gretl), Helene, and a fourth daughter Dora who died as a baby; and five boys: Johannes (Hans), Kurt, Rudolf (Rudi),
Paul Paul may refer to: *Paul (given name), a given name (includes a list of people with that name) * Paul (surname), a list of people People Christianity *Paul the Apostle (AD c.5–c.64/65), also known as Saul of Tarsus or Saint Paul, early Chri ...
– who became a concert pianist despite losing an arm in World War I – and Ludwig, who was the youngest of the family. The children were baptized as Catholics, received formal Catholic instruction, and were raised in an exceptionally intense environment. The family was at the center of Vienna's cultural life; Bruno Walter described the life at the Wittgensteins' palace as an "all-pervading atmosphere of humanity and culture." Karl was a leading patron of the arts, commissioning works by
Auguste Rodin François Auguste René Rodin (12 November 184017 November 1917) was a French sculptor, generally considered the founder of modern sculpture. He was schooled traditionally and took a craftsman-like approach to his work. Rodin possessed a uni ...
and financing the city's exhibition hall and art gallery, the Secession Building.
Gustav Klimt Gustav Klimt (July 14, 1862 – February 6, 1918) was an Austrian symbolist painter and one of the most prominent members of the Vienna Secession movement. Klimt is noted for his paintings, murals, sketches, and other objets d'art. Klimt's pr ...
painted Wittgenstein's sister for her wedding portrait, and
Johannes Brahms Johannes Brahms (; 7 May 1833 – 3 April 1897) was a German composer, pianist, and conductor of the mid- Romantic period. Born in Hamburg into a Lutheran family, he spent much of his professional life in Vienna. He is sometimes grouped wit ...
Gustav Mahler Gustav Mahler (; 7 July 1860 – 18 May 1911) was an Austro-Bohemian Romantic composer, and one of the leading conductors of his generation. As a composer he acted as a bridge between the 19th-century Austro-German tradition and the modernism ...
gave regular concerts in the family's numerous music rooms. Wittgenstein, who valued precision and discipline, never considered
contemporary music Contemporary classical music is classical music composed close to the present day. At the beginning of the 21st century, it commonly referred to the post-1945 modern forms of post-tonal music after the death of Anton Webern, and included ser ...
acceptable. He said to his friend Drury in 1930:
Music came to a full stop with
Brahms Johannes Brahms (; 7 May 1833 – 3 April 1897) was a German composer, pianist, and conductor of the mid- Romantic period. Born in Hamburg into a Lutheran family, he spent much of his professional life in Vienna. He is sometimes grouped w ...
; and even in Brahms I can begin to hear the noise of machinery.
Ludwig Wittgenstein himself had
absolute pitch Absolute pitch (AP), often called perfect pitch, is a rare ability of a person to identify or re-create a given musical note without the benefit of a reference tone. AP may be demonstrated using linguistic labeling ("naming" a note), associating ...
, and his devotion to music remained vitally important to him throughout his life; he made frequent use of musical examples and metaphors in his philosophical writings, and he was unusually adept at whistling lengthy and detailed musical passages. He also learnt to play the
clarinet The clarinet is a musical instrument in the woodwind family. The instrument has a nearly cylindrical bore and a flared bell, and uses a single reed to produce sound. Clarinets comprise a family of instruments of differing sizes and pitches ...
in his 30s. A fragment of music (three bars), composed by Wittgenstein, was discovered in one of his 1931 notebooks, by Michael Nedo, director of the Wittgenstein Institute in Cambridge.

Family temperament and the brothers' suicides

Ray Monk writes that Karl's aim was to turn his sons into captains of industry; they were not sent to school lest they acquire bad habits, but were educated at home to prepare them for work in Karl's industrial empire. Three of the five brothers would later commit suicide. Psychiatrist Michael Fitzgerald argues that Karl was a harsh perfectionist who lacked empathy, and that Wittgenstein's mother was anxious and insecure, unable to stand up to her husband. Johannes Brahms said of the family, whom he visited regularly:
They seemed to act towards one another as if they were at court.
The family appeared to have a strong streak of depression running through it. Anthony Gottlieb tells a story about Paul practicing on one of the pianos in the Wittgensteins' main family mansion, when he suddenly shouted at Ludwig in the next room:
I cannot play when you are in the house, as I feel your scepticism seeping towards me from under the door!
The family palace housed seven grand pianos and each of the siblings pursued music "with an enthusiasm that, at times, bordered on the pathological". The eldest brother, Hans, was hailed as a musical prodigy. At the age of four, writes Alexander Waugh, Hans could identify the
Doppler effect The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, wh ...
in a passing siren as a quarter-tone drop in pitch, and at five started crying "Wrong! Wrong!" when two brass bands in a carnival played the same tune in different
keys Key or The Key may refer to: Common meanings * Key (cryptography), a piece of information that controls the operation of a cryptography algorithm * Key (lock), device used to control access to places or facilities restricted by a lock * Key (m ...
. But he died in mysterious circumstances in May 1902, when he ran away to America and disappeared from a boat in
Chesapeake Bay The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the Eastern Shore of Maryland / ...
, most likely having committed suicide. Two years later, aged 22 and studying chemistry at the Berlin Academy, the third eldest brother, Rudi, committed suicide in a Berlin bar. He had asked the pianist to play Thomas Koschat's "''Verlassen, verlassen, verlassen bin ich''" ("Forsaken, forsaken, forsaken am I"), before mixing himself a drink of milk and
potassium cyanide Potassium cyanide is a compound with the formula KCN. This colorless crystalline salt, similar in appearance to sugar, is highly soluble in water. Most KCN is used in gold mining, organic synthesis, and electroplating. Smaller applications includ ...
. He had left several suicide notes, one to his parents that said he was grieving over the death of a friend, and another that referred to his "perverted disposition". It was reported at the time that he had sought advice from the Scientific-Humanitarian Committee, an organization that was campaigning against
Paragraph 175 Paragraph 175 (known formally a§175 StGB also known as Section 175 in English) was a provision of the German Criminal Code from 15 May 1871 to 10 March 1994. It made homosexual acts between males a crime, and in early revisions the provisio ...
of the German Criminal Code, which prohibited homosexual sex. His father forbade the family from ever mentioning his name again. The second eldest brother, Kurt, an officer and company director, shot himself on 27 October 1918 just before the end of World War I, when the Austrian troops he was commanding refused to obey his orders and deserted ''en masse''. According to Gottlieb, Hermine had said Kurt seemed to carry "the germ of disgust for life within himself". Later, Ludwig wrote:
I ought to have ... become a star in the sky. Instead of which I have remained stuck on earth.

1903–1906: Realschule in Linz

Realschule in Linz

Wittgenstein was taught by private tutors at home until he was 14 years old. Subsequently, for three years, he attended a school. After the deaths of Hans and Rudi, Karl relented, and allowed Paul and Ludwig to be sent to school. Waugh writes that it was too late for Wittgenstein to pass his exams for the more academic ''Gymnasium'' in Wiener Neustadt; having had no formal schooling, he failed his entrance exam and only barely managed after extra tutoring to pass the exam for the more technically oriented
k.u.k. The phrase Imperial and Royal ( German: ''kaiserlich und königlich'', ), typically abbreviated as ''k. u. k.'', ''k. und k.'', ''k. & k.'' in German (the "und" is always spoken unabbreviated), ''cs. és k. (császári és királyi)'' in Hungar ...
Realschule ''Realschule'' () is a type of secondary school in Germany, Switzerland and Liechtenstein. It has also existed in Croatia (''realna gimnazija''), the Austrian Empire, the German Empire, Denmark and Norway (''realskole''), Sweden (''realskola ...
'' in
Linz Linz ( , ; cs, Linec) is the capital of Upper Austria and third-largest city in Austria. In the north of the country, it is on the Danube south of the Czech border. In 2018, the population was 204,846. In 2009, it was a European Capital of ...
, a small state school with 300 pupils. In 1903, when he was 14, he began his three years of formal schooling there, lodging nearby in term time with the family of Dr. Josef Strigl, a teacher at the local gymnasium, the family giving him the nickname Luki. On starting at the Realschule, Wittgenstein had been moved forward a year. Historian Brigitte Hamann writes that he stood out from the other boys: he spoke an unusually pure form of High German with a stutter, dressed elegantly, and was sensitive and unsociable. Monk writes that the other boys made fun of him, singing after him: "Wittgenstein wandelt wehmütig widriger Winde wegen Wienwärts" ("Wittgenstein wanders wistfully Vienna-wards (in) worsening winds"). In his leaving certificate, he received a top mark (5) in religious studies; a 2 for conduct and English, 3 for French, geography, history, mathematics and physics, and 4 for German, chemistry, geometry and freehand drawing. He had particular difficulty with spelling and failed his written German exam because of it. He wrote in 1931:
My bad spelling in youth, up to the age of about 18 or 19, is connected with the whole of the rest of my character (my weakness in study).


Wittgenstein was
baptized Baptism (from grc-x-koine, βάπτισμα, váptisma) is a form of ritual purification—a characteristic of many religions throughout time and geography. In Christianity, it is a Christian sacrament of initiation and adoption, almost in ...
as an infant by a Catholic priest and received formal instruction in Catholic doctrine as a child, as was common at the time. In an interview, his sister Gretl Stonborough-Wittgenstein says that their grandfather's "strong, severe, partly ascetic Christianity" was a strong influence on all the Wittgenstein children. While he was at the ''Realschule'', he decided he lacked religious faith and began reading
Arthur Schopenhauer Arthur Schopenhauer ( , ; 22 February 1788 – 21 September 1860) was a German philosopher. He is best known for his 1818 work ''The World as Will and Representation'' (expanded in 1844), which characterizes the phenomenal world as the prod ...
per Gretl's recommendation. He nevertheless believed in the importance of the idea of confession. He wrote in his diaries about having made a major confession to his oldest sister, Hermine, while he was at the ''Realschule''; Monk speculates that it may have been about his loss of faith. He also discussed it with Gretl, his other sister, who directed him to Schopenhauer's '' The World as Will and Representation''. As a teenager, Wittgenstein adopted Schopenhauer's
epistemological idealism Epistemological idealism is a subjectivist position in epistemology that holds that what one knows about an object exists only in one's mind. It is opposed to epistemological realism. Overview Epistemological idealism suggests that everything we ...
. However, after his study of the philosophy of mathematics, he abandoned epistemological idealism for
Gottlob Frege Friedrich Ludwig Gottlob Frege (; ; 8 November 1848 – 26 July 1925) was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic phil ...
's conceptual realism. In later years, Wittgenstein was highly dismissive of Schopenhauer, describing him as an ultimately "shallow" thinker:
Schopenhauer has quite a crude mind ... where real depth starts, his comes to an end.
Wittgenstein's relationship with Christianity and with religion in general, for which he always professed a sincere and devoted sympathy, would change over time, much like his philosophical ideas. In 1912, Wittgenstein wrote to Russell saying that Mozart and Beethoven were the actual sons of God. However, Wittgenstein resisted formal religion, saying it was hard for him to "bend the knee", though his grandfather's beliefs continued to influence Wittgenstein – as he said, "I cannot help seeing every problem from a religious point of view." Wittgenstein referred to
Augustine of Hippo Augustine of Hippo ( , ; la, Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430), also known as Saint Augustine, was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Af ...
in his ''Philosophical Investigations''. Philosophically, Wittgenstein's thought shows alignment with religious discourse. For example, he would become one of the century's fiercest critics of scientism. Wittgenstein's religious belief emerged during his service for the Austrian army in World War I, and he was a devoted reader of Dostoevsky's and Tolstoy's religious writings. He viewed his wartime experiences as a trial in which he strove to conform to the will of God, and in a journal entry from 29 April 1915, he writes:
Perhaps the nearness of death will bring me the light of life. May God enlighten me. I am a worm, but through God I become a man. God be with me. Amen.
Around this time, Wittgenstein wrote that "Christianity is indeed the only sure way to happiness", but he rejected the idea that religious belief was merely thinking that a certain doctrine was true. From this time on, Wittgenstein viewed religious faith as a way of living and opposed rational argumentation or proofs for God. With age, a deepening personal spirituality led to several elucidations and clarifications, as he untangled language problems in religionattacking, for example, the temptation to think of God's existence as a matter of scientific evidence. In 1947, finding it more difficult to work, he wrote:
I have had a letter from an old friend in Austria, a priest. In it he says that he hopes my work will go well, if it should be God's will. Now that is all I want: if it should be God's will.Rush Rhees, "Ludwig Wittgenstein: Personal Recollections"
In ''Culture and Value'', Wittgenstein writes:
Is what I am doing y work in philosophyreally worth the effort? Yes, but only if a light shines on it from above.
His close friend Norman Malcolm would write:
Wittgenstein's mature life was strongly marked by religious thought and feeling. I am inclined to think that he was more deeply religious than are many people who correctly regard themselves as religious believers.
Toward the end, Wittgenstein wrote:
Bach wrote on the title page of his ''
Orgelbüchlein The ''Orgelbüchlein'' (''Little Organ Book'') BWV 599−644 is a set of 46 chorale preludes for organ — one of them is given in two versions — by Johann Sebastian Bach. All but three were written between 1708 and 1717 when Bach served as or ...
'', 'To the glory of the most high God, and that my neighbour may be benefited thereby.' That is what I would have liked to say about my work.

Influence of Otto Weininger

While a student at the ''Realschule'', Wittgenstein was influenced by Austrian philosopher Otto Weininger's 1903 book ''Geschlecht und Charakter'' ('' Sex and Character''). Weininger (1880–1903), who was Jewish, argued that the concepts male and female exist only as Platonic forms, and that Jews tend to embody the Platonic femininity. Whereas men are basically rational, women operate only at the level of their emotions and sexual organs. Jews, Weininger argued, are similar, saturated with femininity, with no sense of right and wrong, and no soul. Weininger argues that man must choose between his masculine and feminine sides, consciousness and unconsciousness, Platonic love and sexuality. Love and sexual desire stand in contradiction, and love between a woman and a man is therefore doomed to misery or immorality. The only life worth living is the spiritual one – to live as a woman or a Jew means one has no right to live at all; the choice is genius or death. Weininger committed suicide, shooting himself in 1903, shortly after publishing the book. Wittgenstein, then 14, attended Weininger's funeral. Many years later, as a professor at the
University of Cambridge , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...
, Wittgenstein distributed copies of Weininger's book to his bemused academic colleagues. He said that Weininger's arguments were wrong, but that it was the way they were wrong that was interesting. In a letter dated 23 August 1931, Wittgenstein wrote the following to G. E. Moore:
Dear Moore,

Thanks for your letter. I can quite imagine that you don't admire Weininger very much, what with that beastly translation and the fact that W. must feel very foreign to you. It is true that he is fantastic but he is great and fantastic. It isn't necessary or rather not possible to agree with him but the greatness lies in that with which we disagree. It is his enormous mistake which is great. I.e. roughly speaking if you just add a "∼" to the whole book it says an important truth.
In an unusual move, Wittgenstein took out a copy of Weininger's work on 1 June 1931 from the Special Order Books in the university library. He met Moore on 2 June, when he probably gave this copy to Moore.

Jewish background and Hitler

There is much debate about the extent to which Wittgenstein and his siblings, who were of 3/4 Jewish descent, saw themselves as Jews. The issue has arisen in particular regarding Wittgenstein's schooldays, because
Adolf Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Nazi Germany, Germany from 1933 until Death of Adolf Hitler, his death in 1945. Adolf Hitler's rise to power, He rose to power as the le ...
was, for a while, at the same school at the same time. Laurence Goldstein argues that it is "overwhelmingly probable" that the boys met each other and that Hitler would have disliked Wittgenstein, a "stammering, precocious, precious, aristocratic upstart ..." Other commentators have dismissed as irresponsible and uninformed any suggestion that Wittgenstein's wealth and unusual personality might have fed Hitler's antisemitism, in part because there is no indication that Hitler would have seen Wittgenstein as Jewish. Wittgenstein and Hitler were born just six days apart, though Hitler had to re-sit his mathematics exam before being allowed into a higher class, while Wittgenstein was moved forward by one, so they ended up two grades apart at the ''Realschule''. Monk estimates that they were both at the school during the 1904–1905 school year, but says there is no evidence they had anything to do with each other. Several commentators have argued that a school photograph of Hitler may show Wittgenstein in the lower left corner, In his own writings Wittgenstein frequently referred to himself as Jewish, at times as part of an apparent self-flagellation. For example, while berating himself for being a "reproductive" as opposed to "productive" thinker, he attributed this to his own Jewish sense of identity, writing:
The saint is the only Jewish "genius". Even the greatest Jewish thinker is no more than talented. (Myself for instance).
While Wittgenstein would later claim that " thoughts are 100% Hebraic", as
Hans Sluga Hans D. Sluga (; born April 24, 1937) is a German philosopher who spent most of his career as professor of philosophy at the University of California, Berkeley. Sluga teaches and writes on topics in the history of analytic philosophy, the history ...
has argued, if so,
His was a self-doubting Judaism, which had always the possibility of collapsing into a destructive self-hatred (as it did in Weininger's case) but which also held an immense promise of innovation and genius.
By Hebraic, he meant to include the Christian tradition, in contradistinction to the Greek tradition, holding that good and evil could not be reconciled.

1906–1913: University

Engineering at Berlin and Manchester

He began his studies in mechanical engineering at the Technische Hochschule Berlin in
Charlottenburg Charlottenburg () is a locality of Berlin within the borough of Charlottenburg-Wilmersdorf. Established as a town in 1705 and named after Sophia Charlotte of Hanover, Queen consort of Prussia, it is best known for Charlottenburg Palace, th ...
, Berlin, on 23 October 1906, lodging with the family of professor Dr. Jolles. He attended for three semesters, and was awarded a
diploma A diploma is a document awarded by an educational institution (such as a college or university) testifying the recipient has graduated by successfully completing their courses of studies. Historically, it has also referred to a charter or offici ...
(''Abgangzeugnis'') on 5 May 1908. During his time at the Institute, Wittgenstein developed an interest in
aeronautics Aeronautics is the science or art involved with the study, design, and manufacturing of air flight–capable machines, and the techniques of operating aircraft and rockets within the atmosphere. The British Royal Aeronautical Society identifies ...
. He arrived at the
Victoria University of Manchester The Victoria University of Manchester, usually referred to as simply the University of Manchester, was a university in Manchester, England. It was founded in 1851 as Owens College. In 1880, the college joined the federal Victoria University. Aft ...
in the spring of 1908 to study for a doctorate, full of plans for aeronautical projects, including designing and flying his own plane. He conducted research into the behavior of kites in the upper atmosphere, experimenting at a meteorological observation site near
Glossop Glossop is a market town in the Borough of High Peak, Derbyshire, England. It is located east of Manchester, north-west of Sheffield and north of the county town, Matlock. Glossop lies near Derbyshire's borders with Cheshire, Greater Manc ...
Derbyshire Derbyshire ( ) is a ceremonial county in the East Midlands, England. It includes much of the Peak District National Park, the southern end of the Pennine range of hills and part of the National Forest. It borders Greater Manchester to the nor ...
. Specifically, the
Royal Meteorological Society The Royal Meteorological Society is a long-established institution that promotes academic and public engagement in weather and climate science. Fellows of the Society must possess relevant qualifications, but Associate Fellows can be lay enthus ...
researched and investigated the ionization of the upper atmosphere, by suspending instruments on balloons or kites. At Glossop, Wittgenstein worked under Professor of Physics Sir Arthur Schuster. He also worked on the design of a propeller with small jet engines on the end of its blades, something he patented in 1911, and which earned him a research studentship from the university in the autumn of 1908. At the time, contemporary propeller designs were not advanced enough to actually put Wittgenstein's ideas into practice, and it would be years before a blade design that could support Wittgenstein's innovative design was created. Wittgenstein's design required air and gas to be forced along the propeller arms to combustion chambers on the end of each blade, where it was then compressed by the centrifugal force exerted by the revolving arms and ignited. Propellers of the time were typically wood, whereas modern blades are made from pressed steel laminates as separate halves, which are then welded together. This gives the blade a hollow interior, and thus creates an ideal pathway for the air and gas. Work on the jet-powered propeller proved frustrating for Wittgenstein, who had very little experience working with machinery. Jim Bamber, a British engineer who was his friend and classmate at the time, reported that
when things went wrong, which often occurred, he would throw his arms around, stomp about, and swear volubly in German.
According to William Eccles, another friend from that period, Wittgenstein then turned to more theoretical work, focusing on the design of the propeller – a problem that required relatively sophisticated mathematics. It was at this time that he became interested in the
foundations of mathematics Foundations of mathematics is the study of the philosophical and logical and/or algorithmic basis of mathematics, or, in a broader sense, the mathematical investigation of what underlies the philosophical theories concerning the nature of mathem ...
, particularly after reading
Bertrand Russell Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, ar ...
's '' The Principles of Mathematics'' (1903), and
Gottlob Frege Friedrich Ludwig Gottlob Frege (; ; 8 November 1848 – 26 July 1925) was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic phil ...
's '' The Foundations of Arithmetic'', vol. 1 (1893) and vol. 2 (1903). Wittgenstein's sister Hermine said he became obsessed with mathematics as a result, and was anyway losing interest in aeronautics. He decided instead that he needed to study logic and the foundations of mathematics, describing himself as in a "constant, indescribable, almost pathological state of agitation." In the summer of 1911 he visited Frege at the University of Jena to show him some philosophy of mathematics and logic he had written, and to ask whether it was worth pursuing. He wrote:
I was shown into Frege's study. Frege was a small, neat man with a pointed beard who bounced around the room as he talked. He absolutely wiped the floor with me, and I felt very depressed; but at the end he said 'You must come again', so I cheered up. I had several discussions with him after that. Frege would never talk about anything but logic and mathematics, if I started on some other subject, he would say something polite and then plunge back into logic and mathematics.

Arrival at Cambridge

Wittgenstein wanted to study with Frege, but Frege suggested he attend the
University of Cambridge , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...
to study under Russell, so on 18 October 1911 Wittgenstein arrived unannounced at Russell's rooms in Trinity College. Russell was having tea with C. K. Ogden, when, according to Russell,
an unknown German appeared, speaking very little English but refusing to speak German. He turned out to be a man who had learned engineering at Charlottenburg, but during this course had acquired, by himself, a passion for the philosophy of mathematics & has now come to Cambridge on purpose to hear me.
He was soon not only attending Russell's lectures, but dominating them. The lectures were poorly attended and Russell often found himself lecturing only to C. D. Broad, E. H. Neville, and H. T. J. Norton. Wittgenstein started following him after lectures back to his rooms to discuss more philosophy, until it was time for the evening meal in
Hall In architecture, a hall is a relatively large space enclosed by a roof and walls. In the Iron Age and early Middle Ages in northern Europe, a mead hall was where a lord and his retainers ate and also slept. Later in the Middle Ages, the grea ...
. Russell grew irritated; he wrote to his lover
Lady Ottoline Morrell Lady Ottoline Violet Anne Morrell (16 June 1873 – 21 April 1938) was an English aristocrat and society hostess. Her patronage was influential in artistic and intellectual circles, where she befriended writers including Aldous Huxley, Siegfr ...
: "My German friend threatens to be an infliction." Russell soon came to believe that Wittgenstein was a genius, especially after he had examined Wittgenstein's written work. He wrote in November 1911 that he had at first thought Wittgenstein might be a crank, but soon decided he was a genius:
Some of his early views made the decision difficult. He maintained, for example, at one time that all existential propositions are meaningless. This was in a lecture room, and I invited him to consider the proposition: 'There is no hippopotamus in this room at present.' When he refused to believe this, I looked under all the desks without finding one; but he remained unconvinced.
Three months after Wittgenstein's arrival Russell told Morrell:
I love him & feel he will solve the problems I am too old to solve ... He is ''the'' young man one hopes for.
Wittgenstein later told David Pinsent that Russell's encouragement had proven his salvation, and had ended nine years of loneliness and suffering, during which he had continually thought of suicide. In encouraging him to pursue philosophy and in justifying his inclination to abandon engineering, Russell had, quite literally, saved Wittgenstein's life. The role-reversal between Bertrand Russell and Wittgenstein was soon such that Russell wrote in 1916, after Wittgenstein had criticized Russell's own work:
His ittgenstein'scriticism, tho' I don't think you realized it at the time, was an event of first-rate importance in my life, and affected everything I have done since. I saw that he was right, and I saw that I could not hope ever again to do fundamental work in philosophy.

Cambridge Moral Sciences Club and Apostles

In 1912 Wittgenstein joined the Cambridge Moral Sciences Club, an influential discussion group for philosophy dons and students, delivering his first paper there on 29 November that year, a four-minute talk defining philosophy as
all those primitive propositions which are assumed as true without proof by the various sciences.
He dominated the society and for a time would stop attending in the early 1930s after complaints that he gave no one else a chance to speak. The club became infamous within popular philosophy because of a meeting on 25 October 1946 at Richard Braithwaite's rooms in
King's College, Cambridge King's College is a constituent college of the University of Cambridge. Formally The King's College of Our Lady and Saint Nicholas in Cambridge, the college lies beside the River Cam and faces out onto King's Parade in the centre of the cit ...
, where
Karl Popper Sir Karl Raimund Popper (28 July 1902 – 17 September 1994) was an Austrian-British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the c ...
, another Viennese philosopher, had been invited as the guest speaker. Popper's paper was "Are there philosophical problems?", in which he struck up a position against Wittgenstein's, contending that problems in philosophy are real, not just linguistic puzzles as Wittgenstein argued. Accounts vary as to what happened next, but Wittgenstein apparently started waving a hot poker, demanding that Popper give him an example of a moral rule. Popper offered one – "Not to threaten visiting speakers with pokers" – at which point Russell told Wittgenstein he had misunderstood and Wittgenstein left. Popper maintained that Wittgenstein "stormed out", but it had become accepted practice for him to leave early (because of his aforementioned ability to dominate discussion). It was the only time the philosophers, three of the most eminent in the world, were ever in the same room together. The minutes record that the meeting was
charged to an unusual degree with a spirit of controversy.

Cambridge Apostles

The economist
John Maynard Keynes John Maynard Keynes, 1st Baron Keynes, ( ; 5 June 1883 – 21 April 1946), was an English economist whose ideas fundamentally changed the theory and practice of macroeconomics and the economic policies of governments. Originally trained in ...
also invited him to join the Cambridge Apostles, an elite secret society formed in 1820, which both Bertrand Russell and G. E. Moore had joined as students, but Wittgenstein did not greatly enjoy it and attended only infrequently. Russell had been worried that Wittgenstein would not appreciate the group's raucous style of intellectual debate, its precious sense of humour, and the fact that the members were often in love with one another. He was admitted in 1912 but resigned almost immediately because he could not tolerate the style of discussion. Nevertheless, the Cambridge Apostles allowed Wittgenstein to participate in meetings again in the 1920s when he had returned to
Cambridge Cambridge ( ) is a university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cambridge became ...
. Reportedly, Wittgenstein also had trouble tolerating the discussions in the Cambridge Moral Sciences Club.

Frustrations at Cambridge

Wittgenstein was quite vocal about his depression in his years at Cambridge, and before he went to war; on many an occasion, he told Russell of his woes. His mental anguish seemed to stem from two sources: his work, and his personal life. Wittgenstein made numerous remarks to Russell about logic driving him mad. Wittgenstein also stated to Russell that he "felt the curse of those who have half a talent". He later expresses this same worry, and tells of being in mediocre spirits due to his lack of progress in his logical work. Monk writes that Wittgenstein lived and breathed logic, and a temporary lack of inspiration plunged him into despair. Wittgenstein tells of his work in logic affecting his mental status in a very extreme way. However, he also tells Russell another story. Around Christmas, in 1913, he writes:
how can I be a logician before I'm a human being? For the most important thing is coming to terms with myself!
He also tells Russell on an occasion in Russell's rooms that he was worried about logic and his sins; also, once upon arrival to Russell's rooms one night Wittgenstein announced to Russell that he would kill himself once he left. Of things Wittgenstein personally told Russell, Ludwig's temperament was also recorded in the diary of David Pinsent. Pinsent writes
I have to be frightfully careful and tolerant when he gets these sulky fits
I am afraid he is in an even more sensitive neurotic state just now than usual
when talking about Wittgenstein's emotional fluctuations.

Sexual orientation and relationship with David Pinsent

Wittgenstein had romantic relations with both men and women. He is generally believed to have fallen in love with at least three men, and had a relationship with the latter two: David Hume Pinsent in 1912, Francis Skinner in 1930, and Ben Richards in the late 1940s. He later revealed that, as a teenager in Vienna, he had had an affair with a woman. Additionally, in the 1920s Wittgenstein fell in love with a young Swiss woman, Marguerite Respinger, sculpting a bust modelled on her and seriously considering marriage, albeit on condition that they would not have children; she decided that he was not right for her. Wittgenstein's relationship with David Pinsent occurred during an intellectually formative period, and is well documented. Bertrand Russell introduced Wittgenstein to Pinsent in the summer of 1912. Pinsent was a mathematics undergraduate and a relation of David Hume, and Wittgenstein and he soon became very close. The men worked together on experiments in the psychology laboratory about the role of rhythm in the appreciation of music, and Wittgenstein delivered a paper on the subject to the British Psychological Association in Cambridge in 1912. They also travelled together, including to Iceland in September 1912the expenses paid by Wittgenstein, including
first class travel First class is the most luxurious and most expensive travel class of seats and service on a train, passenger ship, airplane, bus, or other system of transport. Compared to business class and economy class, it offers the best service and most ...
, the hiring of a private train, and new clothes and spending money for Pinsent. In addition to Iceland, Wittgenstein and Pinsent traveled to Norway in 1913. In determining their destination, Wittgenstein and Pinsent visited a tourist office in search of a location that would fulfill the following criteria: a small village located on a fjord, a location away from tourists, and a peaceful destination to allow them to study logic and law. Choosing
Øystese Øystese is a village in the municipality of Kvam in Vestland county, Norway. It is located along the Hardangerfjord about east of the municipal centre of Norheimsund. Norwegian County Road 7 passes through the village. The village had a popula ...
, Wittgenstein and Pinsent arrived in the small village on 4 September 1913. During a vacation lasting almost three weeks, Wittgenstein was able to work vigorously on his studies. The immense progress on logic during their stay led Wittgenstein to express to Pinsent his notion of leaving Cambridge and returning to Norway to continue his work on logic. Pinsent's diaries provide valuable insights into Wittgenstein's personality: sensitive, nervous, and attuned to the tiniest slight or change in mood from Pinsent. Pinsent also writes of Wittgenstein being "absolutely sulky and snappish" at times, as well. In his diaries Pinsent wrote about shopping for furniture with Wittgenstein in Cambridge when the latter was given rooms in Trinity. Most of what they found in the stores was not minimalist enough for Wittgenstein's aesthetics:
I went and helped him interview a lot of furniture at various shops ... It was rather amusing: He is terribly fastidious and we led the shopman a frightful dance, Vittgenstein icejaculating ''"No – Beastly!"'' to 90 percent of what he shewed us!
He wrote in May 1912 that Wittgenstein had just begun to study the history of philosophy:
He expresses the most naive surprise that all the philosophers he once worshipped in ignorance are after all stupid and dishonest and make disgusting mistakes!
The last time they saw each other was on 8 October 1913 at Lordswood House in Birmingham, then residence of the Pinsent family:
I got up at 6:15 to see Ludwig off. He had to go very earlyback to Cambridgeas he has lots to do there. I saw him off from the house in a taxi at 7:00to catch a 7:30  train from New Street Station. It was sad parting from him.
Wittgenstein left to live in Norway.

1913–1920: World War I and the ''Tractatus''

Work on ''Logik''

Karl Wittgenstein died on 20 January 1913, and after receiving his inheritance Wittgenstein became one of the wealthiest men in Europe. He donated some of his money, at first anonymously, to Austrian artists and writers, including
Rainer Maria Rilke René Karl Wilhelm Johann Josef Maria Rilke (4 December 1875 – 29 December 1926), shortened to Rainer Maria Rilke (), was an Austrian poet and novelist. He has been acclaimed as an idiosyncratic and expressive poet, and is widely recogn ...
and Georg Trakl. Trakl requested to meet his benefactor but in 1914 when Wittgenstein went to visit, Trakl had killed himself. Wittgenstein came to feel that he could not get to the heart of his most fundamental questions while surrounded by other academics, and so in 1913 he retreated to the village of
Skjolden Skjolden is a village in the municipality of Luster in Vestland county, Norway. It is located at the end of the Lustrafjorden, a branch of the Sognefjorden. Skjolden is located at the innermost point of the Sognefjorden, Norway's longest fjord, ...
in Norway, where he rented the second floor of a house for the winter. He later saw this as one of the most productive periods of his life, writing ''Logik'' (''Notes on Logic''), the predecessor of much of the ''Tractatus''. While in Norway, Wittgenstein learned
Norwegian Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in northwestern Europe * Norwegians, both a nation and an ethnic group native to Norway *Demographics of Norway *The Norwegian language, including th ...
to converse with the local villagers, and Danish to read the works of the Danish philosopher
Søren Kierkegaard Søren Aabye Kierkegaard ( , , ; 5 May 1813 – 11 November 1855) was a Danish theologian, philosopher, poet, social critic, and religious author who is widely considered to be the first existentialist philosopher. He wrote critical texts on ...
. He adored the "quiet seriousness" of the landscape but even Skjolden became too busy for him. He soon designed a small wooden house which was erected on a remote rock overlooking the Eidsvatnet Lake just outside the village. The place was called "Østerrike" (Austria) by locals. He lived there during various periods until the 1930s, and substantial parts of his works were written there. (The house was broken up in 1958 to be rebuilt in the village. A local foundation collected donations and bought it in 2014; it was dismantled again and re-erected at its original location; the inauguration took place on 20 June 2019 with international attendance.) It was during this time that Wittgenstein began addressing what he considered to be a central issue in ''Notes on Logic'', a general decision procedure for determining the truth value of logical propositions which would stem from a single primitive proposition. He became convinced during this time that
l the propositions of logic are generalizations of tautologies and all generalizations of tautologies are generalizations of logic. There are no other logical propositions.
Based on this, Wittgenstein argued that propositions of logic express their truth or falsehood in the sign itself, and one need not know anything about the constituent parts of the proposition to determine it true or false. Rather, one simply need identify the statement as a tautology (true), a contradiction (false), or neither. The problem lay in forming a primitive proposition which encompassed this and would act as the basis for all of logic. As he stated in correspondence with Russell in late 1913,
The big question now is, how must a system of signs be constituted in order to make every tautology recognizable as such IN ONE AND THE SAME WAY? This is the fundamental problem of logic!
The importance Wittgenstein placed upon this fundamental problem was so great that he believed if he did not solve it, he had no reason or right to live. Despite this apparent life-or-death importance, Wittgenstein had given up on this primitive proposition by the time of the writing of the ''Tractatus''. The ''Tractatus'' does not offer any general process for identifying propositions as tautologies; in a simpler manner,
Every tautology itself shows that it is a tautology.
This shift to understanding tautologies through mere identification or recognition occurred in 1914 when Moore was called on by Wittgenstein to assist him in dictating his notes. At Wittgenstein's insistence, Moore, who was now a Cambridge don, visited him in Norway in 1914, reluctantly because Wittgenstein exhausted him. David Edmonds and John Eidinow write that Wittgenstein regarded Moore, an internationally known philosopher, as an example of how far someone could get in life with ''"absolutely no intelligence whatever."'' In Norway it was clear that Moore was expected to act as Wittgenstein's secretary, taking down his notes, with Wittgenstein falling into a rage when Moore got something wrong. When he returned to Cambridge, Moore asked the university to consider accepting ''Logik'' as sufficient for a bachelor's degree, but they refused, saying it wasn't formatted properly: no footnotes, no preface. Wittgenstein was furious, writing to Moore in May 1914:
If I am not worth your making an exception for me ''even in some STUPID details'' then I may as well go to Hell directly; and if I ''am'' worth it and you don't do it then – by God – ''you'' might go there.
Moore was apparently distraught; he wrote in his diary that he felt sick and could not get the letter out of his head. The two did not speak again until 1929.

Military service

On the outbreak of World War I, Wittgenstein immediately volunteered for the
Austro-Hungarian Army The Austro-Hungarian Army (, literally "Ground Forces of the Austro-Hungarians"; , literally "Imperial and Royal Army") was the ground force of the Austro-Hungarian Dual Monarchy from 1867 to 1918. It was composed of three parts: the joint army ...
, despite being eligible for a medical exemption. He served first on a ship and then in an artillery workshop "several miles from the action". He was wounded in an accidental explosion, and hospitalised to
Kraków Kraków (), or Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city dates back to the seventh century. Kraków was the official capital of Poland until 159 ...
. In March 1916, he was posted to a fighting unit on the front line of the Russian front, as part of the Austrian 7th Army, where his unit was involved in some of the heaviest fighting, defending against the Brusilov Offensive. Wittgenstein directed the fire of his own artillery from an observation post in no-man's land against Allied troopsone of the most dangerous jobs, since he was targeted by enemy fire. He was decorated with the Military Merit with Swords on the Ribbon, and was commended by the army for "exceptionally courageous behaviour, calmness, sang-froid, and heroism" that "won the total admiration of the troops". In January 1917, he was sent as a member of a
howitzer A howitzer () is a long-ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like oth ...
regiment to the Russian front, where he won several more medals for bravery including the Silver Medal for Valour, First Class. In 1918, he was promoted to lieutenant and sent to the Italian front as part of an artillery regiment. For his part in the final Austrian offensive of June 1918, he was recommended for the Gold Medal for Valour, one of the highest honours in the Austrian army, but was instead awarded the Band of the Military Service Medal with Swordsit being decided that this particular action, although extraordinarily brave, had been insufficiently consequential to merit the highest honour. Throughout the war, he kept notebooks in which he frequently wrote philosophical reflections alongside personal remarks, including his contempt for the character of the other soldiers. His notebooks also attest to his philosophical and spiritual reflections, and it was during this time that he experienced a kind of religious awakening. In his entry from 11 June 1915, Wittgenstein states that
The meaning of life, i.e. the meaning of the world, we can call God.
And connect with this the comparison of God to a father.
To pray is to think about the meaning of life.
and on 8 July that
To believe in God means to understand the meaning of life.
To believe in God means to see that the facts of the world are not the end of the matter.
To believe in God means to see that life has a meaning ... br />When my conscience upsets my equilibrium, then I am not in agreement with Something. But what is this? Is it ''the world''?
Certainly it is correct to say: Conscience is the voice of God.
He discovered
Leo Tolstoy Count Lev Nikolayevich TolstoyTolstoy pronounced his first name as , which corresponds to the romanization ''Lyov''. () (; russian: link=no, Лев Николаевич Толстой,In Tolstoy's day, his name was written as in pre-refor ...
's 1896 '' The Gospel in Brief'' at a bookshop in
Tarnów Tarnów () is a city in southeastern Poland with 105,922 inhabitants and a metropolitan area population of 269,000 inhabitants. The city is situated in the Lesser Poland Voivodeship since 1999. From 1975 to 1998, it was the capital of the Tarn ...
, and carried it everywhere, recommending it to anyone in distress, to the point where he became known to his fellow soldiers as "the man with the gospels". The extent to which ''The Gospel in Brief'' influenced Wittgenstein can be seen in the ''Tractatus'', in the unique way both books number their sentences. In 1916 Wittgenstein read Dostoevsky's '' The Brothers Karamazov'' so often that he knew whole passages of it by heart, particularly the speeches of the elder Zosima, who represented for him a powerful Christian ideal, a holy man "who could see directly into the souls of other people".
Iain King Iain Benjamin King is a British writer. King was appointed a Commander of the Order of the British Empire in the 2013 Birthday Honours, for services to governance in Libya, Afghanistan and Kosovo. He is a Scholar at the Modern War Institute, ...
has suggested that Wittgenstein's writing changed substantially in 1916, when he started confronting much greater dangers during frontline fighting. Russell said he returned from the war a changed man, one with a deeply
mystical Mysticism is popularly known as becoming one with God or the Absolute, but may refer to any kind of ecstasy or altered state of consciousness which is given a religious or spiritual meaning. It may also refer to the attainment of insight in u ...
ascetic Asceticism (; from the el, ἄσκησις, áskesis, exercise', 'training) is a lifestyle characterized by abstinence from sensual pleasures, often for the purpose of pursuing spiritual goals. Ascetics may withdraw from the world for their p ...

Completion of the ''Tractatus''

In the summer of 1918 Wittgenstein took military leave and went to stay in one of his family's Vienna summer houses, Neuwaldegg. It was there in August 1918 that he completed the ''Tractatus'', which he submitted with the title ''Der Satz'' (German: proposition, sentence, phrase, set, but also "leap") to the publishers Jahoda and Siegel. A series of events around this time left him deeply upset. On 13 August, his uncle Paul died. On 25 October, he learned that Jahoda and Siegel had decided not to publish the ''Tractatus'', and on 27 October, his brother Kurt killed himself, the third of his brothers to commit suicide. It was around this time he received a letter from David Pinsent's mother to say that Pinsent had been killed in a plane crash on 8 May. Wittgenstein was distraught to the point of being suicidal. He was sent back to the Italian front after his leave and, as a result of the defeat of the Austrian army, he was captured by Allied forces on 3 November in Trentino. He subsequently spent nine months in an Italian prisoner of war camp. He returned to his family in Vienna on 25 August 1919, by all accounts physically and mentally spent. He apparently talked incessantly about suicide, terrifying his sisters and brother Paul. He decided to do two things: to enroll in teacher training college as an elementary school teacher, and to get rid of his fortune. In 1914, it had been providing him with an income of 300,000 
Kronen Kronen Brauerei, also known as Private Brewery Dortmund Kronen, was one of the oldest breweries in Westphalia and has its headquarters at the Old Market in Dortmund. The company was able to look back on more than 550 years of brewing traditio ...
a year, but by 1919 was worth a great deal more, with a sizable portfolio of investments in the United States and the
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Nether ...
. He divided it among his siblings, except for Margarete, insisting that it not be held in trust for him. His family saw him as ill, and acquiesced.

1920–1928: Teaching, the ''Tractatus'', Haus Wittgenstein

Teacher training in Vienna

In September 1919 he enrolled in the ''Lehrerbildungsanstalt'' (teacher training college) in the ''Kundmanngasse'' in Vienna. His sister Hermine said that Wittgenstein working as an elementary teacher was like using a precision instrument to open crates, but the family decided not to interfere.
Thomas Bernhard Nicolaas Thomas Bernhard (; 9 February 1931 – 12 February 1989) was an Austrian novelist, playwright and poet who explored death, social injustice, and human misery in controversial literature that was deeply pessimistic about modern civilizat ...
, more critically, wrote of this period in Wittgenstein's life: "the multi-millionaire as a village schoolmaster is surely a piece of perversity."

Teaching posts in Austria

In the summer of 1920, Wittgenstein worked as a gardener for a monastery. At first he applied, under a false name, for a teaching post at Reichenau, was awarded the job, but he declined it when his identity was discovered. As a teacher, he wished to no longer be recognized as a member of the Wittgenstein family. In response, his brother Paul wrote:
It is out of the question, really completely out of the question, that anybody bearing our name and whose elegant and gentle upbringing can be seen a thousand paces off, would not be identified as a member of our family ... That one can neither simulate nor dissimulate anything including a refined education I need hardly tell you.
In 1920, Wittgenstein was given his first job as a primary school teacher in Trattenbach, under his real name, in a remote village of a few hundred people. His first letters describe it as beautiful, but in October 1921, he wrote to Russell: "I am still at Trattenbach, surrounded, as ever, by odiousness and baseness. I know that human beings on the average are not worth much anywhere, but here they are much more good-for-nothing and irresponsible than elsewhere." He was soon the object of gossip among the villagers, who found him eccentric at best. He did not get on well with the other teachers; when he found his lodgings too noisy, he made a bed for himself in the school kitchen. He was an enthusiastic teacher, offering late-night extra tuition to several of the students, something that did not endear him to the parents, though some of them came to adore him; his sister Hermine occasionally watched him teach and said the students "literally crawled over each other in their desire to be chosen for answers or demonstrations." To the less able, it seems that he became something of a tyrant. The first two hours of each day were devoted to mathematics, hours that Monk writes some of the pupils recalled years later with horror. They reported that he caned the boys and boxed their ears, and also that he pulled the girls' hair; this was not unusual at the time for boys, but for the villagers he went too far in doing it to the girls too; girls were not expected to understand algebra, much less have their ears boxed over it. The violence apart, Monk writes that he quickly became a village legend, shouting "Krautsalat!" ("coleslaw" – i.e. shredded cabbage) when the headmaster played the piano, and "Nonsense!" when a priest was answering children's questions.

Publication of the ''Tractatus''

While Wittgenstein was living in isolation in rural Austria, the '' Tractatus'' was published to considerable interest, first in German in 1921 as ''Logisch-Philosophische Abhandlung'', part of Wilhelm Ostwald's journal ''Annalen der Naturphilosophie'', though Wittgenstein was not happy with the result and called it a pirate edition. Russell had agreed to write an introduction to explain why it was important, because it was otherwise unlikely to have been published: it was difficult if not impossible to understand, and Wittgenstein was unknown in philosophy. In a letter to Russell, Wittgenstein wrote "The main point is the theory of what can be expressed (gesagt) by prop sition – i.e. by language – (and, which comes to the same thing, what can be ''thought'') and what can not be expressed by pro osition, but only shown (gezeigt); which, I believe, is the cardinal problem of philosophy." But Wittgenstein was not happy with Russell's help. He had lost faith in Russell, finding him glib and his philosophy mechanistic, and felt he had fundamentally misunderstood the ''Tractatus''. An English translation was prepared in Cambridge by Frank Ramsey, a mathematics undergraduate at King's commissioned by C. K. Ogden. It was Moore who suggested ''Tractatus Logico-Philosophicus'' for the title, an allusion to
Baruch Spinoza Baruch (de) Spinoza (born Bento de Espinosa; later as an author and a correspondent ''Benedictus de Spinoza'', anglicized to ''Benedict de Spinoza''; 24 November 1632 – 21 February 1677) was a Dutch philosopher of Portuguese-Jewish origin, b ...
's ''Tractatus Theologico-Politicus.'' Initially there were difficulties in finding a publisher for the English edition too, because Wittgenstein was insisting it appear without Russell's introduction; Cambridge University Press turned it down for that reason. Finally in 1922 an agreement was reached with Wittgenstein that Kegan Paul would print a bilingual edition with Russell's introduction and the Ramsey-Ogden translation. This is the translation that was approved by Wittgenstein, but it is problematic in a number of ways. Wittgenstein's English was poor at the time, and Ramsey was a teenager who had only recently learned German, so philosophers often prefer to use a 1961 translation by David Pears and Brian McGuinness. An aim of the ''Tractatus'' is to reveal the relationship between language and the world: what can be said about it, and what can only be shown. Wittgenstein argues that the logical structure of language provides the limits of meaning. The limits of language, for Wittgenstein, are the limits of philosophy. Much of philosophy involves attempts to say the unsayable: "What we can say at all can be said clearly," he argues. Anything beyond that – religion, ethics, aesthetics, the mystical – cannot be discussed. They are not in themselves nonsensical, but any statement about them must be. He wrote in the preface: "The book will, therefore, draw a limit to thinking, or rather – not to thinking, but to the expression of thoughts; for, in order to draw a limit to thinking we should have to be able to think both sides of this limit (we should therefore have to be able to think what cannot be thought)." The book is 75 pages long – "As to the shortness of the book, I am ''awfully sorry for it'' ... If you were to squeeze me like a lemon you would get nothing more out of me," he told Ogden – and presents seven numbered propositions (1–7), with various sub-levels (1, 1.1, 1.11): # ''Die Welt ist alles, was der Fall ist''. #: The world is everything that is the case. # ''Was der Fall ist, die Tatsache, ist das Bestehen von Sachverhalten''. #: What is the case, the fact, is the existence of atomic facts. # ''Das logische Bild der Tatsachen ist der Gedanke''. #: The logical picture of the facts is the thought. # ''Der Gedanke ist der sinnvolle Satz''. #: The thought is the significant proposition. # ''Der Satz ist eine Wahrheitsfunktion der Elementarsätze''. #: Propositions are truth-functions of elementary propositions. # ''Die allgemeine Form der Wahrheitsfunktion ist: bar p,\bar\xi, N(\bar\xi)/math>. Dies ist die allgemeine Form des Satzes''. #: The general form of a truth-function is: bar p,\bar\xi, N(\bar\xi)/math>. This is the general form of proposition. # ''Wovon man nicht sprechen kann, darüber muß man schweigen''. #: Whereof one cannot speak, thereof one must be silent.

Visit from Frank Ramsey, Puchberg

In September 1922 he moved to a secondary school in a nearby village, Hassbach, but considered the people there just as bad – "These people are not human ''at all'' but loathsome worms," he wrote to a friend – and he left after a month. In November he began work at another primary school, this time in Puchberg in the Schneeberg mountains. There, he told Russell, the villagers were "one-quarter animal and three-quarters human." Frank P. Ramsey visited him on 17 September 1923 to discuss the ''Tractatus''; he had agreed to write a review of it for ''Mind''. He reported in a letter home that Wittgenstein was living frugally in one tiny whitewashed room that only had space for a bed, a washstand, a small table, and one small hard chair. Ramsey shared an evening meal with him of coarse bread, butter, and cocoa. Wittgenstein's school hours were eight to twelve or one, and he had afternoons free. After Ramsey returned to Cambridge a long campaign began among Wittgenstein's friends to persuade him to return to Cambridge and away from what they saw as a hostile environment for him. He was accepting no help even from his family. Ramsey wrote to
John Maynard Keynes John Maynard Keynes, 1st Baron Keynes, ( ; 5 June 1883 – 21 April 1946), was an English economist whose ideas fundamentally changed the theory and practice of macroeconomics and the economic policies of governments. Originally trained in ...
ittgenstein's familyare very rich and extremely anxious to give him money or do anything for him in any way, and he rejects all their advances; even Christmas presents or presents of invalid's food, when he is ill, he sends back. And this is not because they aren't on good terms but because he won't have any money he hasn't earned ... It is an awful pity.

Teaching continues, Otterthal; Haidbauer incident

He moved schools again in September 1924, this time to Otterthal, near Trattenbach; the socialist headmaster, Josef Putre, was someone Wittgenstein had become friends with while at Trattenbach. While he was there, he wrote a 42-page pronunciation and spelling dictionary for the children, ''Wörterbuch für Volksschulen'', published in Vienna in 1926 by Hölder-Pichler-Tempsky, the only book of his apart from the ''Tractatus'' that was published in his lifetime. A first edition sold in 2005 for £75,000. In 2020, an English version entitled ''Word Book'' translated by art historian Bettina Funcke and illustrated by artist / publisher Paul Chan was released. An incident occurred in April 1926 and became known as ''Der Vorfall Haidbauer'' (the Haidbauer incident). Josef Haidbauer was an 11-year-old pupil whose father had died and whose mother worked as a local maid. He was a slow learner, and one day Wittgenstein hit him two or three times on the head, causing him to collapse. Wittgenstein carried him to the headmaster's office, then quickly left the school, bumping into a parent, Herr Piribauer, on the way out. Piribauer had been sent for by the children when they saw Haidbauer collapse; Wittgenstein had previously pulled Piribauer's daughter, Hermine, so hard by the ears that her ears had bled. Piribauer said that when he met Wittgenstein in the hall that day:
I called him all the names under the sun. I told him he wasn't a teacher, he was an animal-trainer! And that I was going to fetch the police right away!
Piribauer tried to have Wittgenstein arrested, but the village's police station was empty, and when he tried again the next day he was told Wittgenstein had disappeared. On 28 April 1926, Wittgenstein handed in his resignation to Wilhelm Kundt, a local school inspector, who tried to persuade him to stay; however, Wittgenstein was adamant that his days as a schoolteacher were over. Proceedings were initiated in May, and the judge ordered a psychiatric report; in August 1926 a letter to Wittgenstein from a friend, Ludwig Hänsel, indicates that hearings were ongoing, but nothing is known about the case after that. Alexander Waugh writes that Wittgenstein's family and their money may have had a hand in covering things up. Waugh writes that Haidbauer died shortly afterwards of haemophilia; Monk says he died when he was 14 of
leukaemia Leukemia ( also spelled leukaemia and pronounced ) is a group of blood cancers that usually begin in the bone marrow and result in high numbers of abnormal blood cells. These blood cells are not fully developed and are called ''blasts'' or ' ...
. Ten years later, in 1936, as part of a series of "confessions" he engaged in that year, Wittgenstein appeared without warning at the village saying he wanted to confess personally and ask for pardon from the children he had hit. He visited at least four of the children, including Hermine Piribauer, who apparently replied only with a "Ja, ja," though other former students were more hospitable. Monk writes that the purpose of these confessions was not
to hurt his pride, as a form of punishment; it was to dismantle it – to remove a barrier, as it were, that stood in the way of honest and decent thought.
Of the apologies, Wittgenstein wrote,
This brought me into more settled waters... and to greater seriousness.

The Vienna Circle

The ''Tractatus'' was now the subject of much debate amongst philosophers, and Wittgenstein was a figure of increasing international fame. In particular, a discussion group of philosophers, scientists and mathematicians, known as the Vienna Circle, had built up purportedly as a result of the inspiration they had been given by reading the ''Tractatus''. While it is commonly assumed that Wittgenstein was a part of the Vienna Circle, in reality, this was not actually the case. German philosopher
Oswald Hanfling Oswald Hanfling (21 December 1927 – 25 October 2005) was an English philosopher who worked from 1970, until his death, at the Open University in the UK. Early life Oswald Hanfling was born in Berlin in 1927. His parents were Jewish and when ...
writes bluntly: "Wittgenstein was never a member of the Circle, though he was in Vienna during much of the time. Yet his influence on the Circle's thought was at least as important as that of any of its members." However, the philosopher A. C. Grayling contends that while certain superficial similarities between Wittgenstein's early philosophy and
logical positivism Logical positivism, later called logical empiricism, and both of which together are also known as neopositivism, is a movement in Western philosophy whose central thesis was the verification principle (also known as the verifiability criterion o ...
led its members to study the ''Tractatus'' in detail and to arrange discussions with him, Wittgenstein's influence on the Circle was rather limited. The fundamental philosophical views of Circle had been established before they met Wittgenstein and had their origins in the
British empiricists In philosophy, empiricism is an epistemological theory that holds that knowledge or justification comes only or primarily from sensory experience. It is one of several views within epistemology, along with rationalism and skepticism. Empir ...
Ernst Mach Ernst Waldfried Josef Wenzel Mach ( , ; 18 February 1838 – 19 February 1916) was a Moravian-born Austrian physicist and philosopher, who contributed to the physics of shock waves. The ratio of one's speed to that of sound is named the Mach ...
, and the logic of
Frege Friedrich Ludwig Gottlob Frege (; ; 8 November 1848 – 26 July 1925) was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic philo ...
and Russell. Whatever influence Wittgenstein did have on the Circle was largely limited to Moritz Schlick and Friedrich Waismann and, even in these cases, resulted in little lasting effect on their positivism. Grayling states: "...it is no longer possible to think of the ''Tractatus'' as having inspired a philosophical movement, as most earlier commentators claimed." From 1926, with the members of the Vienna Circle, Wittgenstein would take part in many discussions. However, during these discussions, it soon became evident that Wittgenstein held a different attitude towards philosophy than the members of the Circle. For example, during meetings of the Vienna Circle, he would express his disagreement with the group's misreading of his work by turning his back to them and reading poetry aloud. In his autobiography, Rudolf Carnap describes Wittgenstein as the thinker who gave him the greatest inspiration. However, he also wrote that "there was a striking difference between Wittgenstein's attitude toward philosophical problems and that of Schlick and myself. Our attitude toward philosophical problems was not very different from that which scientists have toward their problems." As for Wittgenstein:

Haus Wittgenstein

In 1926 Wittgenstein was again working as a gardener for a number of months, this time at the monastery of Hütteldorf, where he had also inquired about becoming a monk. His sister, Margaret, invited him to help with the design of her new townhouse in Vienna's ''Kundmanngasse''. Wittgenstein, his friend Paul Engelmann, and a team of architects developed a spare modernist house. In particular, Wittgenstein focused on the windows, doors, and radiators, demanding that every detail be exactly as he specified. When the house was nearly finished Wittgenstein had an entire ceiling raised 30 mm so that the room had the exact proportions he wanted. Monk writes that "This is not so marginal as it may at first appear, for it is precisely these details that lend what is otherwise a rather plain, even ugly house its distinctive beauty." It took him a year to design the door handles and another to design the radiators. Each window was covered by a metal screen that weighed , moved by a pulley Wittgenstein designed. Bernhard Leitner, author of ''The Architecture of Ludwig Wittgenstein'', said there is barely anything comparable in the history of interior design: "It is as ingenious as it is expensive. A metal curtain that could be lowered into the floor." The house was finished by December 1928 and the family gathered there at Christmas to celebrate its completion. Wittgenstein's sister Hermine wrote: "Even though I admired the house very much. ... It seemed indeed to be much more a dwelling for the gods." Wittgenstein said "the house I built for Gretl is the product of a decidedly sensitive ear and ''good'' manners, and expression of great ''understanding''... But ''primordial'' life, wild life striving to erupt into the open – that is lacking." Monk comments that the same might be said of the technically excellent, but austere, terracotta sculpture Wittgenstein had modelled of Marguerite Respinger in 1926, and that, as Russell first noticed, this "wild life striving to be in the open" was precisely the substance of Wittgenstein's philosophical work.

1929–1941: Fellowship at Cambridge

PhD and fellowship

According to Feigl (as reported by Monk), upon attending a conference in Vienna by mathematician L. E. J. Brouwer, Wittgenstein remained quite impressed, taking into consideration the possibility of a "return to Philosophy". At the urging of Ramsey and others, Wittgenstein returned to Cambridge in 1929. Keynes wrote in a letter to his wife: "Well, God has arrived. I met him on the 5.15 train." Despite this fame, he could not initially work at Cambridge as he did not have a degree, so he applied as an advanced undergraduate. Russell noted that his previous residency was sufficient to fulfil eligibility requirements for a PhD, and urged him to offer the ''Tractatus'' as his thesis. It was examined in 1929 by Russell and Moore; at the end of the thesis defence, Wittgenstein clapped the two examiners on the shoulder and said, '"Don't worry, I know you'll never understand it." Moore wrote in the examiner's report: "I myself consider that this is a work of genius; but, even if I am completely mistaken and it is nothing of the sort, it is well above the standard required for the Ph.D. degree." Wittgenstein was appointed as a lecturer and was made a fellow of Trinity College.


From 1936 to 1937, Wittgenstein lived again in Norway, where he worked on the ''Philosophical Investigations''. In the winter of 1936/7, he delivered a series of "confessions" to close friends, most of them about minor infractions like white lies, in an effort to cleanse himself. In 1938, he travelled to Ireland to visit Maurice O'Connor Drury, a friend who became a psychiatrist, and considered such training himself, with the intention of abandoning philosophy for it. The visit to Ireland was at the same time a response to the invitation of the then Irish Taoiseach,
Éamon de Valera Éamon de Valera (, ; first registered as George de Valero; changed some time before 1901 to Edward de Valera; 14 October 1882 – 29 August 1975) was a prominent Irish statesman and political leader. He served several terms as head of governm ...
, himself a former mathematics teacher. De Valera hoped Wittgenstein's presence would contribute to the
Dublin Institute for Advanced Studies The Dublin Institute for Advanced Studies (DIAS) ( ga, Institiúid Ard-Léinn Bhaile Átha Cliath) is a statutory independent research institute in Ireland. It was established in 1940 on the initiative of the Taoiseach, Éamon de Valera, in Du ...
which he was soon to set up. While he was in Ireland in March 1938, Germany annexed Austria in the ''Anschluss''; the Viennese Wittgenstein was now a Jew under the 1935 Nuremberg racial laws, because three of his grandparents had been born as Jews. He would also, in July, become by law a citizen of the enlarged Germany. The Nuremberg Laws classified people as Jews (''Volljuden'') if they had three or four Jewish grandparents, and as mixed blood (''
Mischling (; "mix-ling"; plural: ) was a pejorative legal term used in Nazi Germany to denote persons of mixed "Aryan" and non-Aryan, such as Jewish, ancestry as codified in the Nuremberg racial laws of 1935. In German, the word has the general denotat ...
'') if they had one or two. It meant ''inter alia'' that the Wittgensteins were restricted in whom they could marry or have sex with, and where they could work. After the Anschluss, his brother Paul left almost immediately for England, and later the US. The Nazis discovered his relationship with Hilde Schania, a brewer's daughter with whom he had had two children but whom he had never married, though he did later. Because she was not Jewish, he was served with a summons for ''
Rassenschande ''Rassenschande'' (, "racial shame") or ''Blutschande'' ( "blood disgrace") was an anti-miscegenation concept in Nazi German racial policy, pertaining to sexual relations between Aryans and non-Aryans. It was put into practice by policies like ...
'' (racial defilement). He told no one he was leaving the country, except for Hilde who agreed to follow him. He left so suddenly and quietly that for a time people believed he was the fourth Wittgenstein brother to have committed suicide. Wittgenstein began to investigate acquiring British or Irish citizenship with the help of Keynes, and apparently had to confess to his friends in England that he had earlier misrepresented himself to them as having just one Jewish grandparent, when in fact he had three. A few days before the invasion of Poland, Hitler personally granted ''Mischling'' status to the Wittgenstein siblings. In 1939 there were 2,100 applications for this, and Hitler granted only 12. Anthony Gottlieb writes that the pretext was that their paternal grandfather had been the bastard son of a German prince, which allowed the Reichsbank to claim foreign currency, stocks and 1700 kg of gold held in Switzerland by a Wittgenstein family trust. Gretl, an American citizen by marriage, started the negotiations over the racial status of their grandfather, and the family's large foreign currency reserves were used as a bargaining tool. Paul had escaped to Switzerland and then the US in July 1938, and disagreed with the negotiations, leading to a permanent split between the siblings. After the war, when Paul was performing in Vienna, he did not visit Hermine who was dying there, and he had no further contact with Ludwig or Gretl.

Professor of philosophy

After G.E. Moore resigned the chair in philosophy in 1939, Wittgenstein was elected. He was naturalised as a
British subject The term "British subject" has several different meanings depending on the time period. Before 1949, it referred to almost all subjects of the British Empire (including the United Kingdom, Dominions, and colonies, but excluding protectorat ...
shortly after on 12 April 1939. In July 1939 he travelled to Vienna to assist Gretl and his other sisters, visiting Berlin for one day to meet an official of the
Reichsbank The ''Reichsbank'' (; 'Bank of the Reich, Bank of the Realm') was the central bank of the German Reich from 1876 until 1945. History until 1933 The Reichsbank was founded on 1 January 1876, shortly after the establishment of the German Empi ...
. After this, he travelled to New York to persuade Paul, whose agreement was required, to back the scheme. The required ''Befreiung'' was granted in August 1939. The unknown amount signed over to the Nazis by the Wittgenstein family, a week or so before the outbreak of war, included amongst many other assets 1,700 kg of gold. There is a report Wittgenstein visited Moscow a second time in 1939, travelling from Berlin, and again met the philosopher Sophia Janowskaya. Norman Malcolm, at the time a post-graduate research fellow at Cambridge, describes his first impressions of Wittgenstein in 1938: Describing Wittgenstein's lecture programme, Malcolm continues: After work, the philosopher would often relax by watching
Westerns The Western is a genre set in the American frontier and commonly associated with folk tales of the Western United States, particularly the Southwestern United States, as well as Northern Mexico and Western Canada. It is commonly referr ...
, where he preferred to sit at the very front of the cinema, or reading detective stories especially the ones written by Norbert Davis. Norman Malcolm wrote that Wittgenstein would rush to the cinema when class ended. By this time, Wittgenstein's view on the
foundations of mathematics Foundations of mathematics is the study of the philosophical and logical and/or algorithmic basis of mathematics, or, in a broader sense, the mathematical investigation of what underlies the philosophical theories concerning the nature of mathem ...
had changed considerably. In his early 20s, Wittgenstein had thought logic could provide a solid foundation, and he had even considered updating Russell and Whitehead's ''
Principia Mathematica The ''Principia Mathematica'' (often abbreviated ''PM'') is a three-volume work on the foundations of mathematics written by mathematician–philosophers Alfred North Whitehead and Bertrand Russell and published in 1910, 1912, and 1913. ...
''. Now he denied there were any mathematical facts to be discovered. He gave a series of lectures on mathematics, discussing this and other topics, documented in a book, with lectures by Wittgenstein and discussions between him and several students, including the young
Alan Turing Alan Mathison Turing (; 23 June 1912 – 7 June 1954) was an English mathematician, computer scientist, logician, cryptanalyst, philosopher, and theoretical biologist. Turing was highly influential in the development of theoretical co ...
who described Wittgenstein as ''"a ''very'' peculiar man"''. The two had many discussions about the relationship between computational logic and everyday notions of truth. Wittgenstein's lectures from this period have also been discussed by another of his students, the Greek philosopher and educator Helle Lambridis. Wittgenstein's teachings in the years 1940–1941 are used in the mid-1950s by Lambridis to write a long text in the form of an imagined dialogue with him, where she begins to develop her own ideas about resemblance in relation to language, elementary concepts and basic-level mental images. Initially only a part of it was published in 1963 in the German education theory review ''Club Voltaire'', but the entire imagined dialogue with Wittgenstein was published after Lambridis's death by her archive holder, the Academy of Athens, in 2004.

1941–1947: Guy's Hospital and Royal Victoria Infirmary

Monk writes that Wittgenstein found it intolerable that a war ( World War II) was going on and he was teaching philosophy. He grew angry when any of his students wanted to become professional philosophers. In September 1941, he asked John Ryle, the brother of the philosopher Gilbert Ryle, if he could get a manual job at
Guy's Hospital Guy's Hospital is an NHS hospital in the borough of Southwark in central London. It is part of Guy's and St Thomas' NHS Foundation Trust and one of the institutions that comprise the King's Health Partners, an academic health science centre. ...
in London. John Ryle was professor of medicine at Cambridge and had been involved in helping Guy's prepare for
the Blitz The Blitz was a German bombing campaign against the United Kingdom in 1940 and 1941, during the Second World War. The term was first used by the British press and originated from the term , the German word meaning 'lightning war'. The Ger ...
. Wittgenstein told Ryle he would die slowly if left at Cambridge, and he would rather die quickly. He started working at Guy's shortly afterwards as a dispensary porter, delivering drugs from the pharmacy to the wards where he apparently advised the patients not to take them. In the new year of 1942, Ryle took Wittgenstein to his home in Sussex to meet his wife who had been determined to meet him. His son recorded the weekend in his diary;
Wink is awful strange ic– not a very good english speaker, keeps on saying 'I mean' and 'its "tolerable"' meaning intolerable.
The hospital staff were not told he was one of the world's most famous philosophers, though some of the medical staff did recognize him – at least one had attended Moral Sciences Club meetings – but they were discreet. "Good God, don't tell anybody who I am!" Wittgenstein begged one of them. Some of them nevertheless called him Professor Wittgenstein, and he was allowed to dine with the doctors. He wrote on 1 April 1942: "I no longer feel any hope for the future of my life. It is as though I had before me nothing more than a long stretch of living death. I cannot imagine any future for me other than a ghastly one. Friendless and joyless." It was at this time that Wittgenstein had an operation at Guy's to remove a
gallstone A gallstone is a stone formed within the gallbladder from precipitated bile components. The term cholelithiasis may refer to the presence of gallstones or to any disease caused by gallstones, and choledocholithiasis refers to the presence of migr ...
that had troubled him for some years. He had developed a friendship with Keith Kirk, a working-class teenage friend of Francis Skinner, the mathematics undergraduate he had had a relationship with until Skinner's death in 1941 from
polio Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 70% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe sym ...
. Skinner had given up academia, thanks at least in part to Wittgenstein's influence, and had been working as a mechanic in 1939, with Kirk as his apprentice. Kirk and Wittgenstein struck up a friendship, with Wittgenstein giving him lessons in physics to help him pass a City and Guilds exam. During his period of loneliness at Guy's he wrote in his diary: "For ten days I've heard nothing more from K, even though I pressed him a week ago for news. I think that he has perhaps broken with me. A ''tragic'' thought!" Kirk had in fact got married, and they never saw one another again. While Wittgenstein was at Guy's he met Basil Reeve, a young doctor with an interest in philosophy, who, with R. T. Grant, was studying the effect of wound shock (a state associative to
hypovolaemia Hypovolemia, also known as volume depletion or volume contraction, is a state of abnormally low extracellular fluid in the body. This may be due to either a loss of both salt and water or a decrease in blood volume. Hypovolemia refers to the loss ...
) on air-raid casualties. When the Blitz ended there were fewer casualties to study. In November 1942, Grant and Reeve moved to the
Royal Victoria Infirmary The Royal Victoria Infirmary (RVI) is a 673-bed tertiary referral hospital and research centre in Newcastle upon Tyne, England, with strong links to Newcastle University. The hospital is part of the Newcastle upon Tyne Hospitals NHS Foundation ...
Newcastle upon Tyne Newcastle upon Tyne (Received Pronunciation, RP: , ), or simply Newcastle, is a City status in the United Kingdom, city and metropolitan borough in Tyne and Wear, England. The city is located on the River Tyne's northern bank and forms the la ...
, to study road traffic and industrial casualties. Grant offered Wittgenstein a position as a laboratory assistant at a wage of £4 per week, and he lived in Newcastle (at 28 Brandling Park,
Jesmond Jesmond is a suburb of Newcastle upon Tyne, situated to the east of the Town Moor. Jesmond is considered to be one of the most affluent suburbs of Newcastle upon Tyne, with higher average house prices than most other areas of the city. H ...
) from 29 April 1943 until February 1944. While there he worked and associated socially with Dr Erasmus Barlow, a great-grandson of Charles Darwin. In the summer of 1946, Wittgenstein thought often of leaving Cambridge and resigning his position as Chair. Wittgenstein grew further dismayed at the state of philosophy, particularly about articles published in the journal ''Mind''. It was around this time that Wittgenstein fell in love with Ben Richards, writing in his diary, "The only thing that my love for B. has done for me is this: it has driven the other small worries associated with my position and my work into the background." On 30 September, Wittgenstein wrote about Cambridge after his return from Swansea, "Everything about the place repels me. The stiffness, the artificiality, the self-satisfaction of the people. The university atmosphere nauseates me." Wittgenstein had only maintained contact with Fouracre, from Guy's hospital, who had joined the army in 1943 after his marriage, only returning in 1947. Wittgenstein maintained frequent correspondence with Fouracre during his time away displaying a desire for Fouracre to return home urgently from the war. In May 1947, Wittgenstein addressed a group of Oxford philosophers for the first time at the Jowett Society. The discussion was on the validity of Descartes' ''
Cogito ergo sum The Latin , usually translated into English as "I think, therefore I am", is the " first principle" of René Descartes's philosophy. He originally published it in French as , in his 1637 ''Discourse on the Method'', so as to reach a wider audie ...
'', where Wittgenstein ignored the question and applied his own philosophical method. Harold Arthur Prichard who attended the event was not pleased with Wittgenstein's methods;
Wittgenstein: If a man says to me, looking at the sky, 'I think it will rain, therefore I exist', I do not understand him.
Prichard: That's all very fine; what we want to know is: is the ''cogito'' valid or not?

1947–1951: Final years

Wittgenstein resigned the professorship at Cambridge in 1947 to concentrate on his writing, and in 1947 and 1948 travelled to
Ireland Ireland ( ; ga, Éire ; Ulster-Scots: ) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the seco ...
, staying at Ross's Hotel in
Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 c ...
and at a farmhouse in Redcross,
County Wicklow County Wicklow ( ; ga, Contae Chill Mhantáin ) is a county in Ireland. The last of the traditional 32 counties, having been formed as late as 1606, it is part of the Eastern and Midland Region and the province of Leinster. It is bordered by ...
, where he began the manuscript MS 137, volume R. Seeking solitude he moved to a holiday cottage in Rosroe overlooking
Killary Harbour Killary Harbour or Killary Fjord () is a fjord or fjard on the west coast of Ireland, in northern Connemara. To its north is County Mayo and the mountains of Mweelrea and Ben Gorm; to its south is County Galway and the Maumturk Mountains. S ...
Connemara Connemara (; )( ga, Conamara ) is a region on the Atlantic coast of western County Galway, in the west of Ireland. The area has a strong association with traditional Irish culture and contains much of the Connacht Irish-speaking Gaeltacht, w ...
owned by Drury's brother. He also accepted an invitation from Norman Malcolm, then professor at Cornell University, to stay with him and his wife for several months at
Ithaca, New York Ithaca is a city in the Finger Lakes region of New York, United States. Situated on the southern shore of Cayuga Lake, Ithaca is the seat of Tompkins County and the largest community in the Ithaca metropolitan statistical area. It is named ...
. He made the trip in April 1949, although he told Malcolm he was too unwell to do philosophical work: "I haven't done any work since the beginning of March & I haven't had the strength of even trying to do any." A doctor in Dublin had diagnosed anaemia and prescribed iron and liver pills. The details of Wittgenstein's stay in America are recounted in Norman Malcolm's ''Ludwig Wittgenstein: A Memoir''. During his summer in America, Wittgenstein began his epistemological discussions, in particular his engagement with philosophical scepticism, that would eventually become the final fragments '' On Certainty''. He returned to London, where he was diagnosed with an inoperable
prostate cancer Prostate cancer is cancer of the prostate. Prostate cancer is the second most common cancerous tumor worldwide and is the fifth leading cause of cancer-related mortality among men. The prostate is a gland in the male reproductive system that surr ...
, which had spread to his bone marrow. He spent the next two months in Vienna, where his sister Hermine died on 11 February 1950; he went to see her every day, but she was hardly able to speak or recognize him. "Great loss for me and all of us," he wrote. "Greater than I would have thought." He moved around a lot after Hermine's death staying with various friends: to Cambridge in April 1950, where he stayed with G.H. von Wright; to London to stay with Rush Rhees; then to Oxford to see Elizabeth Anscombe, writing to Norman Malcolm that he was hardly doing any philosophy. He went to Norway in August with Ben Richards, then returned to Cambridge, where on 27 November he moved into ''Storey's End'' at 76  Storey's Way, the home of his doctor, Edward Bevan, and his wife Joan; he had told them he did not want to die in a hospital, so they said he could spend his last days in their home instead. Joan at first was afraid of Wittgenstein, but they soon became good friends. By the beginning of 1951, it was clear that he had little time left. He wrote a new will in Oxford on 29 January, naming Rhees as his executor, and Anscombe and von Wright his literary administrators, and wrote to Norman Malcolm that month to say, "My mind's completely dead. This isn't a complaint, for I don't really suffer from it. I know that life must have an end once and that mental life can cease before the rest does." In February, he returned to the Bevans' home to work on MS 175 and MS 176. These and other manuscripts were later published as '' Remarks on Colour'' and '' On Certainty''. He wrote to Malcolm on 16 April, 13 days before his death:
An extraordinary thing happened to me. About a month ago I suddenly found myself in the right frame of mind for doing philosophy. I had been ''absolutely'' certain that I'd never again be able to do it. It's the first time after more than 2 years that the curtain in my brain has gone up. – Of course, so far I've only worked for about 5 weeks & it may be all over by tomorrow; but it bucks me up a lot now.


Wittgenstein began work on his final manuscript, MS 177, on 25 April 1951. It was his 62nd birthday on 26 April. He went for a walk the next afternoon, and wrote his last entry that day, 27 April. That evening, he became very ill; when his doctor told him he might live only a few days, he reportedly replied, "Good!" Joan stayed with him throughout that night, and just before losing consciousness for the last time on 28 April, he told her: "Tell them I've had a wonderful life." Norman Malcolm describes this as a "strangely moving utterance". Four of Wittgenstein's former students arrived at his bedside – Ben Richards, Elizabeth Anscombe, Yorick Smythies, and Maurice O'Connor Drury. Anscombe and Smythies were Catholics; and, at the latter's request, a Dominican friar, Father Conrad Pepler, also attended. (Wittgenstein had asked for a "priest who was not a philosopher" and had met with Pepler several times before his death.) They were at first unsure what Wittgenstein would have wanted, but then remembered he had said he hoped his Catholic friends would pray for him, so they did, and he was pronounced dead shortly afterwards. Wittgenstein was given a Catholic burial at Ascension Parish Burial Ground in Cambridge. Drury later said he had been troubled ever since about whether that was the right thing to do. In 2015 the ledger gravestone was refurbished by the British Wittgenstein Society. On his religious views, Wittgenstein was said to be greatly interested in
Catholicism The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...
, and was sympathetic to it, but did not consider himself to be a Catholic. According to Norman Malcolm, Wittgenstein saw Catholicism more as a way of life than as a set of beliefs he held, considering that he did not accept any religious faith.
Wittgenstein has no goal to either support or reject religion; his only interest is to keep discussions, whether religious or not, clear. — T. Labron (2006)
Wittgenstein was said by some commentators to be
agnostic Agnosticism is the view or belief that the existence of God, of the divine or the supernatural is unknown or unknowable. (page 56 in 1967 edition) Another definition provided is the view that "human reason is incapable of providing sufficient ...
, in a qualified sense.

1953: Publication of the ''Philosophical Investigations''

The '' Blue Book'', a set of notes dictated to his class at Cambridge in 1933–1934, contains the seeds of Wittgenstein's later thoughts on language and is widely read as a turning point in his philosophy of language. ''Philosophical Investigations'' was published in two parts in 1953. Most of Part I was ready for printing in 1946, but Wittgenstein withdrew the manuscript from his publisher. The shorter Part II was added by his editors, Elizabeth Anscombe and Rush Rhees. Wittgenstein asks the reader to think of language as a multiplicity of language games within which parts of language develop and function. He argues that the bewitchments of philosophical problems arise from philosophers' misguided attempts to consider the meaning of words independently of their context, usage, and grammar — what he called "language gone on holiday". According to Wittgenstein, philosophical problems arise when language is forced from its proper home into a metaphysical environment, where all the familiar and necessary landmarks and contextual clues are removed. He describes this metaphysical environment as like being on frictionless ice: where the conditions are apparently perfect for a philosophically and logically perfect language, all philosophical problems can be solved without the muddying effects of everyday contexts; but where, precisely because of the lack of friction, language can in fact do no work at all. Wittgenstein argues that philosophers must leave the frictionless ice and return to the "rough ground" of ordinary language in use. Much of the ''Investigations'' consists of examples of how the first false steps can be avoided, so that philosophical problems are dissolved, rather than solved: "The clarity we are aiming at is indeed ''complete'' clarity. But this simply means that the philosophical problems should ''completely'' disappear."

Other posthumous publications

Wittgenstein's archive of unpublished papers included 83 manuscripts, 46 typescripts and 11 dictations, amounting to an estimated 20,000 pages. Choosing among repeated drafts, revisions, corrections, and loose notes, editorial work has found nearly one third of the total suitable for print. An Internet facility hosted by the
University of Bergen The University of Bergen ( no, Universitetet i Bergen, ) is a research-intensive state university located in Bergen, Norway. As of 2019, the university has over 4,000 employees and 18,000 students. It was established by an act of parliament in 19 ...
allows access to images of almost all the material and to search the available transcriptions. In 2011, two new boxes of Wittgenstein papers, thought to have been lost during the Second World War, were found. What became the ''
Philosophical Investigations ''Philosophical Investigations'' (german: Philosophische Untersuchungen) is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953. ''Philosophical Investigations'' is divided into two parts, consisting of what Wittgens ...
'' was already close to completion in 1951. Wittgenstein's three literary executors prioritized it, both because of its intrinsic importance and because he had explicitly intended publication. The book was published in 1953. At least three other works were more or less finished. Two were already "bulky typescripts", the ''Philosophical Remarks'' and ''Philosophical Grammar''. Literary (co-)executor G. H. von Wright stated, "They are virtually completed works. But Wittgenstein did not publish them." The third was ''Remarks on Colour''. "He wrote '' i.a.'' a fair amount on colour concepts, and this material he did excerpt and polish, reducing it to a small compass."



Bertrand Russell Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, ar ...
described Wittgenstein as
perhaps the most perfect example I have ever known of genius as traditionally conceived; passionate, profound, intense, and dominating.
As mentioned above, in 1999 a survey among American university and college teachers ranked the ''Investigations'' as the most important book of 20th-century philosophy, standing out as "the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations." The ''Investigations'' also ranked 54th on a list of most influential twentieth-century works in cognitive science prepared by the
University of Minnesota The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public land-grant research university in the Twin Cities of Minneapolis and Saint Paul, Minnesota, United States ...
's Center for Cognitive Sciences. Duncan J. Richter of the
Virginia Military Institute la, Consilio et Animis (on seal) , mottoeng = "In peace a glorious asset, In war a tower of strength""By courage and wisdom" (on seal) , established = , type = Public senior military college , accreditation = SACS , endowment = $696.8 mill ...
, writing for the ''
Internet Encyclopedia of Philosophy The ''Internet Encyclopedia of Philosophy'' (''IEP'') is a scholarly online encyclopedia, dealing with philosophy, philosophical topics, and philosophers. The IEP combines open access publication with peer reviewed publication of original papers ...
'', has described Wittgenstein as "one of the most influential philosophers of the twentieth century, and regarded by some as the most important since
Immanuel Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German philosopher and one of the central Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and aest ...
." Peter Hacker argues that Wittgenstein's influence on 20th-century analytical philosophy can be attributed to his early influence on the Vienna Circle and later influence on the Oxford "ordinary language" school and Cambridge philosophers. He is considered by some to be one of the greatest philosophers of the modern era. But despite its deep influence on analytical philosophy, Wittgenstein's work did not always gain a positive reception. Argentine-Canadian philosopher
Mario Bunge Mario Augusto Bunge (; ; September 21, 1919 – February 24, 2020) was an Argentine-Canadian philosopher and physicist. His philosophical writings combined scientific realism, systemism, materialism, emergentism, and other principles. He was a ...
considers that "Wittgenstein is popular because he is trivial." In Bunge's opinion, Wittgenstein's philosophy is trivial because it deals with unimportant problems and ignores science. According to Bunge, Wittgenstein's philosophy of language is shallow because it ignores scientific linguistics. Bunge also considers Wittgenstein's philosophy of mind to be speculative because it is not informed by the scientific research performed in psychology.

Scholarly interpretation

There are many diverging interpretations of Wittgenstein's thought. In the words of his friend and colleague Georg Henrik von Wright:
He was of the opinion ... that his ideas were generally misunderstood and distorted even by those who professed to be his disciples. He doubted he would be better understood in the future. He once said he felt as though he was writing for people who would think in a different way, breathe a different air of life, from that of present-day men.
Since Wittgenstein's death, scholarly interpretations of his philosophy have differed. Scholars have differed on the continuity between the so-called early Wittgenstein and the so-called late(r) Wittgenstein (that is, the difference between his views expressed in the ''Tractatus'' and those in ''Philosophical Investigations''), with some seeing the two as starkly disparate and others stressing the gradual transition between the two works through analysis of Wittgenstein's unpublished papers (the '' Nachlass'').

The New Wittgenstein

One significant debate in Wittgenstein scholarship concerns the work of interpreters who are referred to under the banner of The New Wittgenstein school such as Cora Diamond,
Alice Crary Alice Crary (; born 1967) is an American philosopher who currently holds the positions of University Distinguished Professor at the Graduate Faculty, The New School for Social Research in New York City and Visiting Fellow at Regent's Park Colleg ...
, and James F. Conant. While the ''Tractatus'', particularly in its conclusion, seems paradoxical and self-undermining, New Wittgenstein scholars advance a " therapeutic" understanding of Wittgenstein's work – "an understanding of Wittgenstein as aspiring, not to advance metaphysical theories, but rather to help us work ourselves out of confusions we become entangled in when philosophizing." To support this goal, the New Wittgenstein scholars propose a reading of the ''Tractatus'' as "plain nonsense" – arguing it does not attempt to convey a substantive philosophical project but instead simply tries to push the reader to abandon philosophical speculation. The therapeutic approach traces its roots to the philosophical work of John Wisdom and the review of ''The Blue Book'' written by Oets Kolk Bouwsma. The therapeutic approach is not without critics: Hans-Johann Glock argues that the "plain nonsense" reading of the ''Tractatus'' "is at odds with the external evidence, writings and conversations in which Wittgenstein states that the ''Tractatus'' is committed to the idea of ineffable insight."
Hans Sluga Hans D. Sluga (; born April 24, 1937) is a German philosopher who spent most of his career as professor of philosophy at the University of California, Berkeley. Sluga teaches and writes on topics in the history of analytic philosophy, the history ...
and Rupert Read have advocated a "post- therapeutic" or "liberatory" interpretation of Wittgenstein.

Bertrand Russell

In October 1944, Wittgenstein returned to Cambridge around the same time as did Russell, who had been living in the United States for several years. Russell returned to Cambridge after a backlash in America to his writings on morals and religion. Wittgenstein said of Russell's works to Drury:
Russell's books should be bound in two colours…those dealing with mathematical logic in red – and all students of philosophy should read them; those dealing with ethics and politics in blue – and no one should be allowed to read them.
Russell made similar disparaging comments about Wittgenstein's later work:
I have not found in Wittgenstein's ''Philosophical Investigations'' anything that seemed to me interesting and I do not understand why a whole school finds important wisdom in its pages. Psychologically this is surprising. The earlier Wittgenstein, whom I knew intimately, was a man addicted to passionately intense thinking, profoundly aware of difficult problems of which I, like him, felt the importance, and possessed (or at least so I thought) of true philosophical genius. The later Wittgenstein, on the contrary, seems to have grown tired of serious thinking and to have invented a doctrine which would make such an activity unnecessary. I do not for one moment believe that the doctrine which has these lazy consequences is true. I realize, however, that I have an overpoweringly strong bias against it, for, if it is true, philosophy is, at best, a slight help to lexicographers, and at worst, an idle tea-table amusement.

Saul Kripke

Saul Kripke Saul Aaron Kripke (; November 13, 1940 – September 15, 2022) was an American philosopher and logician in the analytic tradition. He was a Distinguished Professor of Philosophy at the Graduate Center of the City University of New York and eme ...
's 1982 book '' Wittgenstein on Rules and Private Language'' contends that the central argument of Wittgenstein's ''
Philosophical Investigations ''Philosophical Investigations'' (german: Philosophische Untersuchungen) is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953. ''Philosophical Investigations'' is divided into two parts, consisting of what Wittgens ...
'' is a devastating rule-following paradox that undermines the possibility of our ever following rules in our use of language. Kripke writes that this paradox is "the most radical and original sceptical problem that philosophy has seen to date." Kripke's book generated a large secondary literature, divided between those who find his sceptical problem interesting and perceptive, and others, such as
John McDowell John Henry McDowell, FBA (born 7 March 1942) is a South African philosopher, formerly a fellow of University College, Oxford, and now university professor at the University of Pittsburgh. Although he has written on metaphysics, epistemology, ...
Stanley Cavell Stanley Louis Cavell (; September 1, 1926 – June 19, 2018) was an American philosopher. He was the Walter M. Cabot Professor of Aesthetics and the General Theory of Value at Harvard University. He worked in the fields of ethics, aesthetics, an ...
, Gordon Baker, Peter Hacker, Colin McGinn, and Peter Winch who argue that his scepticism of meaning is a pseudo-problem that stems from a confused, selective reading of Wittgenstein. Kripke's position has, however, recently been defended against these and other attacks by the Cambridge philosopher Martin Kusch (2006).


A collection of Ludwig Wittgenstein's manuscripts is held by Trinity College, Cambridge. * ''Logisch-Philosophische Abhandlung'', Annalen der Naturphilosophie, 14 (1921) ** ''
Tractatus Logico-Philosophicus The ''Tractatus Logico-Philosophicus'' (widely abbreviated and cited as TLP) is a book-length philosophical work by the Austrian philosopher Ludwig Wittgenstein which deals with the relationship between language and reality and aims to define the ...
'' 'TLP'' translated by C.K. Ogden (1922) * " Some Remarks on Logical Form" (1929), ''Aristotelian Society Supplementary Volume'', Volume 9, Issue 1, 15 July 1929, pp. 162–171. * ''Philosophische Untersuchungen'' (1953) ** ''
Philosophical Investigations ''Philosophical Investigations'' (german: Philosophische Untersuchungen) is a work by the philosopher Ludwig Wittgenstein, published posthumously in 1953. ''Philosophical Investigations'' is divided into two parts, consisting of what Wittgens ...
'' 'PI'' translated by G. E. M. Anscombe (1953) * ''Bemerkungen über die Grundlagen der Mathematik'', ed. by G. H. von Wright, R. Rhees, and G. E. M. Anscombe (1956), a selection of his work on the philosophy of logic and mathematics between 1937 and 1944. ** '' Remarks on the Foundations of Mathematics'', translated by G. E. M. Anscombe, rev. ed. (1978) * ''Bemerkungen über die Philosophie der Psychologie'', ed. G. E. M. Anscombe and G. H. von Wright (1980) ** ''Remarks on the Philosophy of Psychology, Vols. 1 and 2'', translated by G. E. M. Anscombe, ed. G. E. M. Anscombe and G. H. von Wright (1980), a selection of which makes up ''Zettel''. * '' Blue and Brown Books'' (1958), notes dictated in English to Cambridge students in 1933–1935. * ''Philosophische Bemerkungen'', ed. by Rush Rhees (1964) * '' Lectures and Conversations on Aesthetics, Psychology, and Religious Belief'', ed. by Y. Smythies, R. Rhees, and J. Taylor (1967) * '' Remarks on Frazer's Golden Bough'', ed. by R. Rhees (1967) ** ''Philosophical Remarks'' (1975) ** ''Philosophical Grammar'' (1978) * ''Bemerkungen über die Farben'', ed. by G. E. M. Anscombe (1977) ** '' Remarks on Colour'' (1991), remarks on
Goethe Johann Wolfgang von Goethe (28 August 1749 – 22 March 1832) was a German poet, playwright, novelist, scientist, statesman, theatre director, and critic. His works include plays, poetry, literature, and aesthetic criticism, as well as treat ...
's ''
Theory of Colours ''Theory of Colours'' (german: Zur Farbenlehre, links=no) is a book by Johann Wolfgang von Goethe about the poet's views on the nature of colours and how these are perceived by humans. It was published in German in 1810 and in English in 1840. ...
''. * '' On Certainty'', collection of aphorisms discussing the relation between knowledge and certainty, extremely influential in the
philosophy of action Action theory (or theory of action) is an area in philosophy concerned with theories about the processes causing willful human bodily movements of a more or less complex kind. This area of thought involves epistemology, ethics, metaphysics, j ...
. * '' Culture and Value'', collection of personal remarks about various cultural issues, such as religion and music, as well as critique of
Søren Kierkegaard Søren Aabye Kierkegaard ( , , ; 5 May 1813 – 11 November 1855) was a Danish theologian, philosopher, poet, social critic, and religious author who is widely considered to be the first existentialist philosopher. He wrote critical texts on ...
's philosophy. * '' Zettel'', collection of Wittgenstein's thoughts in fragmentary/"diary entry" format as with ''On Certainty'' and ''Culture and Value''. ;Works online
''Wittgenstein: Gesamtbriefwechsel/Complete Correspondence''. Innsbrucker Electronic Edition
''Ludwig Wittgenstein: Gesamtbriefwechsel/Complete Correspondence'' contains Wittgenstein's collected correspondence, edited under the auspices of the Brenner-Archiv's Research Institute (University of Innsbruck). Editors (first edition): Monika Seekircher, Brian McGuinness and Anton Unterkircher. Editors (second edition): Anna Coda, Gabriel Citron, Barbara Halder, Allan Janik, Ulrich Lobis, Kerstin Mayr, Brian McGuinness, Michael Schorner, Monika Seekircher and Joseph Wang.
''Wittgensteins Nachlass''. The Bergen Electronic Edition
The collection includes all of Wittgenstein's unpublished manuscripts, typescripts, dictations, and most of his notebooks. The Nachlass was catalogued by G. H. von Wright in his "The Wittgenstein Papers", first published in 1969, and later updated and included as a chapter with the same title in his book ''Wittgenstein'', published by Blackwell (and by the University of Minnesota Press in the U.S.) in 1982.
Review of P. Coffey's ''Science of Logic''
(1913): a polemical book review, written in 1912 for the March 1913 issue of ''The Cambridge Review'' when Wittgenstein was an undergraduate studying with Russell. The review is the earliest public record of Wittgenstein's philosophical views.
''Nachlass'' online
''Bemerkungen über die Farben (Remarks on Colour)''
Some Remarks on Logical Form


See also

* Definitions of philosophy * International Wittgenstein Symposium * Paul Horwich's views on the Antiphilosophy of Wittgenstein




* * * * * * * * * * * * * * * * * * *
pp. 51ff
* * * * * * * * * * * *

Further reading

Bergen and Cambridge archives

Wittgenstein Archives at the University of Bergen
. Retrieved 16 September 2010. :
Wittgenstein News
University of Bergen. Retrieved 16 September 2010. :
Wittgenstein Source
University of Bergen. Retrieved 16 September 2010.
The Cambridge Wittgenstein Archive
Retrieved 16 September 2010.

Papers about his ''Nachlass''

Via HAL archives-ouvertes.frVia zenodo
* Von Wright, G.H
"The Wittgenstein Papers"
''The Philosophical Review''. 78, 1969.


* Agassi, J. ''Ludwig Wittgenstein's Philosophical Investigations: An Attempt at a Critical Rationalist Appraisal''. Cham: Springer, 2018, Synthese Library, vol. 401. * Baker, G.P. and Hacker, P. M. S. ''Wittgenstein: Understanding and Meaning''. Blackwell, 1980. * Baker, G.P. and Hacker, P. M. S. ''Wittgenstein: Rules, Grammar, and Necessity''. Blackwell, 1985. * Baker, G.P. and Hacker, P. M. S. ''Wittgenstein: Meaning and Mind''. Blackwell, 1990. * Baker, Gordon P., and Katherine J. Morris. ''Wittgenstein's Method: Neglected Aspects: Essays on Wittgenstein.'' Malden, MA: Blackwell, 2004. * * Brockhaus, Richard R. ''Pulling Up the Ladder: The Metaphysical Roots of Wittgenstein's Tractatus Logico-Philosophicus''. Open Court, 1990. * Conant, James F. "Putting Two and Two Together: Kierkegaard, Wittgenstein, and the Point of View for Their Work as Authors" in ''The Grammar of Religious Belief'', edited by D.Z. Phillips. St. Martins Press, NY: 1996 * * * * * * Engelmann, Paul. ''Letters from Ludwig Wittgenstein With a Memoir''. Blackwell, 1967; New York: Horizon Press, 1968. The memoir is reprinted in F. A. Flowers III and Ian Ground, eds., ''Portraits of Wittgenstein'', ch. 20 (2015) 999 and ''Portraits of Wittgenstein: Abridged Edition'', ch. 13 (2018). Bloomsbury Academic. * * * * Hacker, P. M. S. ''Insight and Illusion: Themes in the Philosophy of Wittgenstein''. Clarendon Press, 1986. * Hacker, P. M. S. "Wittgenstein, Ludwig Josef Johann", in Ted Honderich (ed.). ''The Oxford Companion to Philosophy''. Oxford University Press, 1995. * Hacker, P. M. S. ''Wittgenstein's Place in Twentieth Century Analytic Philosophy''. Blackwell, 1996. * Hacker, P. M. S. ''Wittgenstein: Mind and Will''. Blackwell, 1996. * Holt, Jim, "Positive Thinking" (review of Karl Sigmund, ''Exact Thinking in Demented Times: The Vienna Circle and the Epic Quest for the Foundations of Science'', Basic Books, 449 pp.), '' The New York Review of Books'', vol. LXIV, no. 20 (21 December 2017), pp. 74–76. * Jormakka, Kari. "The Fifth Wittgenstein", ''Datutop'' 24, 2004, a discussion of the connection between Wittgenstein's architecture and his philosophy. * * Klagge, James C. ''Wittgenstein's Artillery: Philosophy as Poetry''. Cambridge, Massachusetts: The MIT Press, 2021. * * Levy, Paul. ''Moore: G.E. Moore and the Cambridge Apostles''. Weidenfeld & Nicolson, 1979. * Luchte, James
"Under the Aspect of Time ("sub specie temporis"): Heidegger, Wittgenstein, and the Place of the Nothing"
''Philosophy Today'', Volume 53, Number 2 (Spring, 2009) * Lurie, Yuval. ''Wittgenstein on the Human Spirit.''. Rodopi, 2012. * Macarthur, David. "Working on Oneself in Philosophy and Architecture: A Perfectionist Reading of the Wittgenstein House." ''Architectural Theory Review'', vol. 19, no. 2 (2014): 124–140. * Padilla Gálvez, J., ''Wittgenstein, from a New Point of View''. Frankfurt am Main: Lang, 2003. . * Padilla Gálvez, J., ''Philosophical Anthropology. Wittgenstein's Perspectives''. Frankfurt a. M.: Ontos Verlag, 2010. . * Pears, David F.br>"A Special Supplement: The Development of Wittgenstein's Philosophy"
''The New York Review of Books'', 10 July 1969. * Pears, David F. ''The False Prison: A Study of the Development of Wittgenstein's Philosophy'', Volumes 1 and 2. Oxford University Press, 1987 and 1988. * * * Pitcher, George. ''The Philosophy of Wittgenstein''. Englewood Cliffs, N.J.: Prentice-Hall, Inc., 1964. * Richter, Duncan J
"Ludwig Wittgenstein (1889–1951)"
''Internet Encyclopedia of Philosophy'', 30 August 2004. Retrieved 16 September 2010. * Rizzo, Francesco
"Kauffman lettore di Wittgenstein"
Università degli studi di Palermo, Palermo, 2017. * Scheman, Naomi and O'Connor, Peg (eds.). ''Feminist Interpretations of Ludwig Wittgenstein''. Penn State Press, 2002. * Schönbaumsfeld, Genia. ''A Confusion of the Spheres: Kierkegaard and Wittgenstein on Philosophy and Religion''. Oxford University Press, 2007. * * Shyam Wuppuluri, N. C. A. da Costa (eds.)
"''Wittgensteinian'' (adj.): Looking at the World from the Viewpoint of Wittgenstein's Philosophy"
Springer – The Frontiers Collection, 2019. Foreword by A. C. Grayling. * Temelini, Michael
''Wittgenstein and the Study of Politics''
Toronto: University of Toronto Press, 2015. * * Xanthos, Nicolas
"Wittgenstein's Language Games"
in Louis Hebert (dir.), ''Signo'' (online), Rimouski (Quebec, Canada), 2006.

Works referencing Wittgenstein

* Doctorow, E. L. ''City of God''. Plume, 2001, depicts an imaginary rivalry between Wittgenstein and Einstein. * Doxiadis, Apostolos and Papadimitriou, Christos. '' Logicomix''. Bloomsbury, 2009. * Duffy, Bruce. ''The World as I Found It''. Ticknor & Fields, 1987, a fictionalized account of Wittgenstein's life. * Jarman, Derek. ''
Wittgenstein Ludwig Josef Johann Wittgenstein ( ; ; 26 April 1889 – 29 April 1951) was an Austrians, Austrian-British people, British philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy o ...
'', a biopic of Wittgenstein with a script by Terry Eagleton, British Film Institute, 1993. * Kerr, Philip. '' A Philosophical Investigation'', Chatto & Windus, 1992, a dystopian thriller set in 2012. * Markson, David. '' Wittgenstein's Mistress''.
Dalkey Archive Press Dalkey Archive Press is an American publisher of fiction, poetry, foreign translations and literary criticism specializing in the publication or republication of lesser-known, often avant-garde works. The company has offices in Funks Grove, Il ...
, 1988, an experimental novel, a first-person account of what it would be like to live in the world of the ''Tractatus''. * Tully, James. ''Strange Multiplicity: Constitutionalism in an Age of Diversity''. Cambridge: Cambridge University Press, 1995 * Wallace, David Foster. '' The Broom of the System''. Penguin Books, 1987, a novel.

External links

* *
C.K. Ogden's English translation of ''Tractatus Logico-Philosophicus'' (Gutenberg)
* * * * *
Trinity College Chapel
BBC Radio 4 programme on Wittgenstein
broadcast 13 December 2011
"A. J. Ayer's Critique of Wittgenstein's Private Language Argument"

BBC Radio 4 discussion with Ray Monk, Barry Smith & Marie McGinn (''In Our Time'', 4 December 2003) * * In Our Time
Ludwig Wittgenstein
broadcast 4 December 2003 on
BBC Radio 4 BBC Radio 4 is a British national radio station owned and operated by the BBC that replaced the BBC Home Service in 1967. It broadcasts a wide variety of spoken-word programmes, including news, drama, comedy, science and history from the BBC's ...
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