5 ideas
| 8138 | Beware lest any man spoil you through philosophy [Paul] |
| 490 | Everything happens by reason and necessity [Leucippus] |
| 17371 | Some kinds are very explanatory, but others less so, and some not at all [Devitt] |
| 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] |