14 ideas
| 11178 | The essence or definition of an essence involves either a class of properties or a class of propositions [Fine,K] |
| 9456 | Modal logic is multiple systems, shown in the variety of accessibility relations between worlds [Jacquette] |
| 9457 | The two main views in philosophy of logic are extensionalism and intensionalism [Jacquette] |
| 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] |
| 11174 | A logical truth is true in virtue of the nature of the logical concepts [Fine,K] |
| 9458 | Extensionalists say that quantifiers presuppose the existence of their objects [Jacquette] |
| 9461 | Intensionalists say meaning is determined by the possession of properties [Jacquette] |
| 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] |
| 9460 | Extensionalist semantics forbids reference to nonexistent objects [Jacquette] |
| 9459 | Extensionalist semantics is circular, as we must know the extension before assessing 'Fa' [Jacquette] |
| 4377 | Intellectualism is an excessive emphasis on reasoning in moral philosophy [Burnyeat] |