The Evolution of Ludwig Wittgenstein’s Philosophical Thought

Few philosophers have had the intellectual courage to completely overturn their own ideas. Ludwig Wittgenstein did it – and in doing so, he reshaped the entire philosophy of language. Widely regarded as one of the most important thinkers of the 20th century, Wittgenstein produced two philosophies so distinct from each other that scholars often treat them as if written by two different men. His early work, the Tractatus Logico-Philosophicus, argued that language is a precise logical picture of reality. His later work, the Philosophical Investigations, dismantled that view almost entirely – replacing it with a rich, messy, and deeply human picture of how language actually functions in everyday life. Understanding this evolution is not just an exercise in reading one philosopher’s mind; it opens a window into the most fundamental questions about how words mean anything at all.

The early Wittgenstein: language as a picture of the world 🔗

Ludwig Wittgenstein was born in Vienna in 1889 into a wealthy, intellectually prominent family. After studying engineering, his interest in the philosophy of mathematics led him to Gottlob Frege, who in turn directed him to Bertrand Russell at Cambridge. He arrived in 1911, and within a year Russell was convinced he was witnessing a philosophical genius. When World War I began, Wittgenstein enlisted in the Austrian army, and it was during active service – and later as a prisoner of war in Italy – that he worked on the drafts of what would become the Tractatus Logico-Philosophicus, published in German in 1921 and in English in 1922.

The Tractatus is a compact, austerely written work that attempts to draw a definitive boundary between what can and cannot be meaningfully said. According to the Stanford Encyclopedia of Philosophy, it provided new insights into the relationships between world, thought, and language by applying modern logic to metaphysics. At its core is the famous picture theory of meaning.

The picture theory of meaning 🔗

The picture theory of language, as articulated in the Tractatus, holds that a meaningful proposition pictures a state of affairs or atomic fact. Language, on this view, mirrors reality: words and their logical arrangement correspond directly to objects and their configuration in the world. Just as a photograph represents a scene by sharing structural properties with it, a proposition represents a fact by sharing a logical form with it. A statement is meaningful if and only if it corresponds to something that could, in principle, be verified in the world.

This view also draws a sharp line between what can be said and what can only be shown. As Britannica explains, Wittgenstein held that the logical structure of metaphysical and nonempirical sentences cannot be stated in language but can be “shown.” Domains such as ethics, aesthetics, religion, and mathematics fall outside the boundary of what can be meaningfully expressed. They are not false – they are simply beyond the reach of language. This is why the Tractatus closes with one of the most quoted lines in all of philosophy: “Whereof one cannot speak, thereof one must be silent.”

The theory carries a striking internal paradox. The Tractatus itself deals with the relationship between language and reality – a topic that, by its own standard, lies outside the scope of meaningful language. Wittgenstein was aware of this. He compared the book to a ladder: once you have climbed it and seen things rightly, you must throw the ladder away. The propositions of the Tractatus, he acknowledged, are ultimately nonsensical by their own criteria – but a useful nonsense that leads the reader toward clarity.

The turning point: why Wittgenstein abandoned his early view 🔗

Having convinced himself that the Tractatus had solved all philosophical problems, Wittgenstein left philosophy in the 1920s. He gave away his inherited fortune and worked variously as a schoolteacher, gardener, and architect in rural Austria. But philosophy pulled him back. His re-engagement came through contact with the Vienna Circle, a group of logical empiricists who had drawn heavily on the Tractatus. Ironically, their enthusiasm for his early work helped him see its limitations. He returned to Cambridge in 1929 and spent the following two decades rethinking almost everything he had previously argued.

A key moment in this transformation, often cited by scholars, was a remark made by the Italian economist Piero Sraffa, who gestured in a Neapolitan way and asked Wittgenstein what the logical form of that was. The gesture conveyed a perfectly clear meaning – contempt – but it could not obviously be “pictured” in the logical sense the Tractatus required. This, and similar observations, pressed Wittgenstein to reconsider whether language really works like a logical mirror at all.

As his thinking evolved, Wittgenstein began to see language not as a static logical system but as an active, socially embedded practice – fluid and meaningful only within the contexts in which it is used. This shift is most evident in the Philosophical Investigations, published posthumously in 1953.

The later Wittgenstein: language as a form of life 🔗

The Philosophical Investigations opens by criticizing the “Augustinian” picture of language – the view that every word names some object, and that sentences are combinations of such names. Wittgenstein had implicitly held a sophisticated version of this view in the Tractatus. In his later work, he sets out to show why this picture is fundamentally misleading.

According to Wittgenstein’s later philosophy, the meaning of a word is based on how it is used within a language game. This is often summarized as: meaning is use. Words do not derive their significance from objects they designate or from mental representations associated with them – they derive it from the roles they play in human activity. There is no fixed, universal meaning waiting to be discovered; meaning is constituted by practice.

Language games 🔗

The concept of a language game (Sprachspiel) is central to the Philosophical Investigations. Wittgenstein used this term to describe simple and complex examples of language use in which language and action are interwoven. A word or sentence has meaning only in light of the rules of the “game” being played. The utterance “Water!” for instance, could be an order, an exclamation, a question, or an answer – its meaning entirely depends on context. Similarly, the word “game” itself cannot be defined by a single essential property shared by all games; board games, card games, and sports all bear what Wittgenstein called a family resemblance to one another – overlapping and crisscrossing similarities, with no single feature running through all of them.

Language games are not arbitrary. They are grounded in what Wittgenstein calls forms of life (Lebensformen) – the shared human practices, customs, and activities within which language has its home. On this view, rationality itself is not an abstract standard against which language is measured, but something that manifests within specific language games and the forms of life that sustain them. Legal language, scientific language, religious language, and everyday conversation are all distinct games, each with its own rules. Philosophical confusion, Wittgenstein argued, arises when words are taken out of their native language game and used as though they belong to a different one.

Rule-following and its communal basis 🔗

One of the most philosophically rich sections of the Philosophical Investigations concerns rule-following. How do we know that we are following a rule correctly? Wittgenstein argues that following a rule is not a private, inner act but a social practice. There is no private act of “grasping” a rule that guarantees correct application in every future case. Rather, to follow a rule is to act in accordance with a community’s shared practices. Meaning and correctness are not fixed by individual mental processes; they are established communally, through training and participation in shared forms of life.

This insight has profound implications. It means that language cannot be purely private. If someone claims to be following a rule but consistently diverges from how the community applies it, there is no independent “private meaning” to appeal to. Correct rule-following is judged by the community’s standards, not by an inner sense that one is applying it rightly.

The private language argument 🔗

Perhaps the most debated argument in the Philosophical Investigations is the private language argument. Wittgenstein challenges the intuition – widespread in philosophy since Descartes – that language could in principle be purely private: a language whose words refer to inner sensations accessible only to the individual user. In the Philosophical Investigations, Wittgenstein argued that for language to have meaning, it must be rooted in shared, public criteria. A word gets its meaning not from a private inner experience but from the external, communal practices in which it is used.

He illustrates this with a thought experiment: suppose someone decides to use a sign “S” each time they experience a particular private sensation, making a note in a diary. Wittgenstein asks: what would make any application of “S” correct or incorrect? There could be no criteria for the correctness of one’s use of S. Checking one’s memory against one’s memory is like buying multiple copies of the same newspaper to verify whether a story is true. Without a public standard of correctness, “S” cannot function as a meaningful sign. This argument strikes at the heart of any philosophy that grounds meaning in purely subjective, introspective experience.

From the Tractatus to the Investigations: the scope of the transformation 🔗

The shift from early to later Wittgenstein is not merely a change of opinion on a few philosophical technicalities. It represents a wholesale change in how language, meaning, and philosophy itself are understood. The Tractatus sought a definitive logical structure underlying all meaningful language, with a fixed boundary between sense and nonsense. The Philosophical Investigations abandons the search for any such underlying essence. Language, on the later view, does not have a single hidden logical grammar – it is a diverse, open-ended family of practices, each governed by its own contextual rules.

Where the early Wittgenstein saw philosophy’s task as drawing the limits of meaningful language, the later Wittgenstein saw its task as therapeutic: dissolving philosophical problems that arise when language is used outside its proper context. The Philosophical Investigations critiques all of traditional philosophy – including the Tractatus – as the product of language going on “holiday,” being used outside the language games that give it life. Philosophical problems, on this view, are not to be solved but dissolved – shown to be pseudo-problems generated by linguistic confusion.

The influence of this transformation has been vast. Wittgenstein’s later ideas – language games, rule-following, forms of life, the private language argument, and meaning as use – have shaped not just philosophy, but linguistics, cognitive science, sociology, and the theory of education. His later work prompted an entirely new approach to understanding how human beings communicate, learn, and construct shared realities.

What do you think? If meaning truly depends on shared communal practices rather than fixed definitions, does this mean that words can mean different things in different communities – and if so, how do we ever achieve genuine understanding across cultural or linguistic boundaries? And given that Wittgenstein himself dismantled his own first philosophy, does the willingness to radically revise one’s views count as a philosophical strength or a weakness?

References

1. https://www.britannica.com/topic/Tractatus-Logico-Philosophicus
2. https://plato.stanford.edu/entries/wittgenstein/
3. https://en.wikipedia.org/wiki/Picture_theory_of_language
4. https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus
5. https://medium.com/@adecressac/from-words-to-games-wittgensteins-influence-on-modern-linguistics-1159746a446b
6. https://en.wikipedia.org/wiki/Philosophical_Investigations
7. https://en.wikipedia.org/wiki/Language_game_(philosophy)
8. https://www.tandfonline.com/doi/full/10.1080/00131857.2020.1821190
9. https://pmc.ncbi.nlm.nih.gov/articles/PMC11021330/
10. https://www.sciencedirect.com/science/article/abs/pii/S0378216606001093