12 ideas
| 9198 | It is no longer possible to be a sage, but we can practice the exercise of wisdom [Hadot] |
| 9197 | The logos represents a demand for universal rationality [Hadot] |
| 10153 | In everyday language, truth seems indefinable, inconsistent, and illogical [Tarski] |
| 19141 | Tarski thought axiomatic truth was too contingent, and in danger of inconsistencies [Tarski, by Davidson] |
| 10048 | There is no clear boundary between the logical and the non-logical [Tarski] |
| 10694 | Logical consequence is when in any model in which the premises are true, the conclusion is true [Tarski, by Beall/Restall] |
| 10479 | Logical consequence: true premises give true conclusions under all interpretations [Tarski, by Hodges,W] |
| 10157 | Tarski improved Hilbert's geometry axioms, and without set-theory [Tarski, by Feferman/Feferman] |
| 8463 | Maths can be reduced to logic and set theory [Quine] |
| 8461 | The category of objects incorporates the old distinction of substances and their modes [Quine] |
| 8462 | A hallucination can, like an ague, be identified with its host; the ontology is physical, the idiom mental [Quine] |
| 9196 | The pleasure of existing is the only genuine pleasure [Hadot] |