5 ideas
| 8638 | Thomae's idea of abstract from peculiarities gives a general concept, and leaves the peculiarities [Frege on Thomae] |
| 17371 | Some kinds are very explanatory, but others less so, and some not at all [Devitt] |
| 13097 | Force in substance makes state follow state, and ensures the very existence of substance [Leibniz] |
| 17372 | The higher categories are not natural kinds, so the Linnaean hierarchy should be given up [Devitt] |
| 17373 | Species pluralism says there are several good accounts of what a species is [Devitt] |