# Ludwig Wittgenstein The only philosopher to found two opposed philosophies — and repudiate the first. Ludwig Wittgenstein (1889–1951) wrote the *[[Tractatus Logico-Philosophicus]]* (1921), declared philosophy's problems solved, quit the field for a decade, then returned to dismantle his own system in the posthumous *Philosophical Investigations* (1953). Between them, the two books set the agenda for all of Analytic Philosophy — and the later Wittgenstein's "language games" and "forms of life" leaked far beyond it, into every modern debate about whether communities with different vocabularies can understand each other at all. ## Background Born into one of Habsburg Vienna's richest industrial families (a house Brahms played in; three brothers lost to suicide), Wittgenstein gave his fortune away, studied aeronautics in Manchester, and arrived unannounced at [[Bertrand Russell]]'s Cambridge rooms in 1911. He wrote the *Tractatus* in the trenches and POW camps of WWI (he volunteered, decorated repeatedly for bravery), then spent the 1920s as a village schoolteacher and architect before returning to Cambridge in 1929 — where his terrifying seminars, conducted in agonized silences in a deck-chaired bare room, formed a generation. The famous 1946 "poker incident" — ten heated minutes with [[Karl Popper]] at the Moral Sciences Club — is the analytic tradition's best anecdote. He died of cancer in 1951; last words: "Tell them I've had a wonderful life." ## Core ideas ### The Tractatus: language as picture The early system: language **pictures** facts; the proposition shares logical form with the state of affairs it depicts; whatever cannot be pictured — ethics, aesthetics, God, the meaning of life — cannot be *said*, only shown. Hence the famous final proposition: "Whereof one cannot speak, thereof one must be silent." The Vienna Circle read it as a charter for scientism; Wittgenstein insisted the unsayable part was the *point* — the book's ethics lay in what it consigned to silence. ### The Investigations: meaning as use The later philosophy demolishes the picture theory: there is no single essence of language, only countless **language games** woven into **forms of life**. Meaning is *use*; words are tools; philosophical problems arise when language "goes on holiday" — when we mistake grammar for metaphysics — and the philosopher's task is therapeutic: showing the fly out of the fly-bottle. **Family resemblance** replaces essences; the **private language argument** makes meaning irreducibly public and social. ### Certainty and hinges The late notes published as *On Certainty* analyze the bedrock beneath argument: some propositions function as **hinges** — not conclusions we have verified but the riverbed within which inquiry flows ("Here is a hand"; "The earth existed before my birth"). Doubt itself presupposes them. The hinge framework has become a standard tool for analyzing deep disagreement — including the vault's cases, where political camps differ not over evidence but over which hinges hold. ## Reception and relevance Wittgenstein is claimed everywhere and owned nowhere: the Vienna Circle's positivists, ordinary-language Oxford, postmodern relativists (forms of life as incommensurable worlds), and religious fideists (Wittgensteinian "fideism" treats faith as its own language game) all built on him; political readings — conservative (forms of life as tradition, contra rationalist reform — an affinity with [[Michael Oakeshott]]) and radical — coexist. For this vault the working tools are **language games** and **hinges**: precise instruments for the [[Epistemology]] war's deepest layer, where "do your own research" and institutional trust are rival forms of life rather than rival evidence-weightings. ## Legacy in the KB context Wittgenstein is the hinge (his own word) of Analytic Philosophy — both its early logical program and its later therapeutic turn — and the deepest theoretical resource for the vault's incommensurable-information-worlds problem. With [[Bertrand Russell]] and [[Karl Popper]], the analytic trio in this folder is complete. ## Major works - *Tractatus Logico-Philosophicus* (1921) - *Philosophical Investigations* (posthumous, 1953) - *On Certainty* (posthumous, 1969) ## See also - [[Tractatus Logico-Philosophicus]] — the early system - [[Bertrand Russell]] — sponsor and foil - Analytic Philosophy — the tradition he twice remade - [[Epistemology]] — hinges and language games at work - [[Michael Oakeshott]] — the conservative affinity