9 ideas
| 19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
| 12430 | Classical logic is our preconditions for assessing empirical evidence [Kitcher] |
| 12431 | I believe classical logic because I was taught it and use it, but it could be undermined [Kitcher] |
| 12428 | Many necessities are inexpressible, and unknowable a priori [Kitcher] |
| 12429 | Knowing our own existence is a priori, but not necessary [Kitcher] |
| 19424 | Knowledge needs clarity, distinctness, and adequacy, and it should be intuitive [Leibniz] |
| 19427 | True ideas represent what is possible; false ideas represent contradictions [Leibniz] |
| 19216 | Propositions (such as 'that dog is barking') only exist if their items exist [Williamson] |
| 19425 | In the schools the Four Causes are just lumped together in a very obscure way [Leibniz] |