“ The truth of tautology is certain, of propositions possible, of contradiction impossible. ”
Ludwig Wittgenstein, Tractatus Logico-Philosophicus (1921). copy citation
| Author | Ludwig Wittgenstein |
|---|---|
| Source | Tractatus Logico-Philosophicus |
| Topic | truth certainty tautology |
| Date | 1921 |
| Language | English |
| Reference | |
| Note | Translated by C. K. Ogden |
| Weblink | http://www.gutenberg.org/files/5740/5740-pdf.pdf |
Context
“Tautology leaves to reality the whole infinite logical space; contradiction fills the whole logical space and leaves no point to reality. Neither of them, therefore, can in any way determine reality.
4.464 OGD [→GER | →P/M] The truth of tautology is certain, of propositions possible, of contradiction impossible.
(Certain, possible, impossible: here we have an indication of that gradation which we need in the theory of probability.)
4.465 OGD [→GER | →P/M] The logical product of a tautology and a proposition says the same as the proposition.” source
4.464 OGD [→GER | →P/M] The truth of tautology is certain, of propositions possible, of contradiction impossible.
(Certain, possible, impossible: here we have an indication of that gradation which we need in the theory of probability.)
4.465 OGD [→GER | →P/M] The logical product of a tautology and a proposition says the same as the proposition.” source
Meaning and analysis
