15 ideas
| 9764 | Inspiration and social improvement need wisdom, but not professional philosophy [Quine] |
| 9763 | For a good theory of the world, we must focus on our flabby foundational vocabulary [Quine] |
| 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] |
| 15375 | If terms change their designations in different states, they are functions from states to objects [Fitting] |
| 15376 | Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting] |
| 15378 | Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting] |
| 15379 | Justication logics make explicit the reasons for mathematical truth in proofs [Fitting] |
| 10048 | There is no clear boundary between the logical and the non-logical [Tarski] |
| 11026 | Classical logic is deliberately extensional, in order to model mathematics [Fitting] |
| 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] |
| 11028 | λ-abstraction disambiguates the scope of modal operators [Fitting] |
| 10157 | Tarski improved Hilbert's geometry axioms, and without set-theory [Tarski, by Feferman/Feferman] |
| 15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |