14 ideas
| 17892 | For clear questions posed by reason, reason can also find clear answers [Gödel] |
| 11178 | The essence or definition of an essence involves either a class of properties or a class of propositions [Fine,K] |
| 9188 | Gödel proved that first-order logic is complete, and second-order logic incomplete [Gödel, by Dummett] |
| 11175 | Logical concepts rest on certain inferences, not on facts about implications [Fine,K] |
| 11176 | The property of Property Abstraction says any suitable condition must imply a property [Fine,K] |
| 10620 | Originally truth was viewed with total suspicion, and only demonstrability was accepted [Gödel] |
| 11174 | A logical truth is true in virtue of the nature of the logical concepts [Fine,K] |
| 17883 | Gödel's Theorems did not refute the claim that all good mathematical questions have answers [Gödel, by Koellner] |
| 17885 | Gödel eventually hoped for a generalised completeness theorem leaving nothing undecidable [Gödel, by Koellner] |
| 10614 | The real reason for Incompleteness in arithmetic is inability to define truth in a language [Gödel] |
| 11177 | Can the essence of an object circularly involve itself, or involve another object? [Fine,K] |
| 11173 | Being a man is a consequence of his essence, not constitutive of it [Fine,K] |
| 11179 | If there are alternative definitions, then we have three possibilities for essence [Fine,K] |
| 7825 | The politics of Leibniz was the reunification of Christianity [Stewart,M] |