6 ideas
| 9463 | Classical logic is bivalent, has excluded middle, and only quantifies over existent objects [Jacquette] |
| 17368 | Essentialism concerns the nature of a group, not its category [Devitt] |
| 17370 | Things that gradually change, like species, can still have essences [Devitt] |
| 1590 | The just man does not harm his enemies, but benefits everyone [Plato] |
| 17369 | We name species as small to share properties, but large enough to yield generalisations [Devitt] |
| 17367 | Species are phenetic, biological, niche, or phylogenetic-cladistic [Devitt, by PG] |