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On Certainty (German: Über Gewissheit, original spelling Über Gewißheit) is a philosophical book composed from notes written by Ludwig Wittgenstein over four separate periods in the eighteen months before his death on 29 April 1951.
Form of life (German: Lebensform) is a term used sparingly by Ludwig Wittgenstein in posthumously published works Philosophical Investigations (PI), On Certainty and in parts of his Nachlass. [1] Wittgenstein in his Tractatus Logico-Philosophicus (TLP) was concerned with the structure of language, responding to Frege and Russell.
Whereas Russell believed the names (like x) in his theory should refer to things we can know directly by virtue of acquaintance, Wittgenstein did not believe that there are any epistemic constraints on logical analyses: the simple objects are whatever is contained in the elementary propositions which cannot be logically analyzed any further.
The picture theory of language, also known as the picture theory of meaning, is a theory of linguistic reference and meaning articulated by Ludwig Wittgenstein in the Tractatus Logico-Philosophicus. Wittgenstein suggested that a meaningful proposition pictured a state of affairs or atomic fact .
Ludwig Josef Johann Wittgenstein (/ ˈ v ɪ t ɡ ən ʃ t aɪ n,-s t aɪ n / VIT-gən-s(h)tyne, [7] Austrian German: [ˈluːdvɪk ˈjoːsɛf ˈjoːhan ˈvɪtɡn̩ʃtaɪn]; 26 April 1889 – 29 April 1951) was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.
During this phase, Russell and Wittgenstein sought to understand language (and hence philosophical problems) by using formal logic to formalize the way in which philosophical statements are made. Wittgenstein developed a comprehensive system of logical atomism in his Tractatus Logico-Philosophicus (German: Logisch-Philosophische Abhandlung, 1921
A language-game (German: Sprachspiel) is a philosophical concept developed by Ludwig Wittgenstein, referring to simple examples of language use and the actions into which the language is woven. Wittgenstein argued that a word or even a sentence has meaning only as a result of the "rule" of the "game" being played.
[16] [17] (See also Wittgenstein's picture theory of language.) The use theory of meaning, most commonly associated with the later Wittgenstein, helped inaugurate the idea of "meaning as use", and a communitarian view of language. Wittgenstein was interested in the way in which the communities use language, and how far it can be taken. [18]