Wittgenstein on Rules and Private Language

Saul Kripke's influential interpretation of Ludwig Wittgenstein's later philosophy, primarily from the *Philosophical Investigations*, argues that Wittgenstein demolishes the possibility of a private language. Kripke presents this as Wittgenstein's central thesis: no language, private or public, can be meaningfully understood or used without recourse to public criteria of correctness for its terms. He contends that for any given use of a word, there is no internal, subjective rule that necessitates that specific use over any other, and that meaning is ultimately grounded in our shared practices and the community's agreement on how to apply terms.

The book elaborates on this by examining paradoxes that arise from the idea of private meaning, such as the "skeptical argument" concerning rule-following. Kripke articulates how the concept of a language implies a system of public verification and correction; without this external check, assertions of meaning become unintelligible, collapsing into mere idiosyncratic behavior. Readers gain a rigorous understanding of how Wittgenstein shifts the focus from the internal mental state of the language user to the external, observable criteria that constitute language use.

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Key concepts

• Rule-Following — The philosophical problem of how it is possible to be guided by a rule, and Kripke's skeptical argument that no past action or intention can determine future use.
• Private Language Argument — Wittgenstein's assertion that a language whose words refer to sensations or mental states can only be understood if there are public, external criteria for its use.
• Community View — Kripke's interpretation that meaning and rule-following are ultimately grounded in the shared practices and agreements of a language-using community.
• Sceptical Paradox — The challenge that for any given use of a word, there is no fact of the matter that dictates the correct application of that word in the future.