Wittgenstein: Life and Main Philosophical Ideas

Biographical Background

Ludwig Wittgenstein lived from 1889 to 1951. Born into a wealthy Viennese family, he studied engineering before turning to philosophy at Cambridge under Russell. He served in World War I and completed Tractatus Logico-Philosophicus. Later he left philosophy for a time, worked as a schoolteacher and architect, and eventually returned to Cambridge. His later thought appears mainly in Philosophical Investigations.

His philosophy is often divided into early and later periods.

Philosophical Thought

The early Wittgenstein of the Tractatus defends a picture theory of language. The world is the totality of facts, not things. Propositions picture possible states of affairs by sharing logical form with them. What can be said clearly are factual propositions; ethics, religion, and meaning of life are not factual propositions but show themselves.

The famous conclusion says: whereof one cannot speak, thereof one must be silent. This is not contempt for ethics but a claim about the limits of factual language.

The later Wittgenstein rejects the idea that language has one underlying essence. Language is a collection of language-games: commanding, questioning, telling stories, calculating, joking, praying, promising, and more. Meaning is use.

Language is embedded in forms of life. To understand a word is to know how it functions in human practices. Philosophical confusion often arises when words are removed from their ordinary uses.

His private language argument challenges the idea of a language referring to wholly private inner objects with no public criteria. Words for sensations are learned and used within shared practices.

For later Wittgenstein, philosophy is not theory-building but therapy. It untangles confusions created by language and brings words back from metaphysical misuse to everyday use.

Wittgenstein's importance is extraordinary because he reshaped philosophy twice: first through logical analysis and then through the study of ordinary language, practice, rules, and forms of life.