9 ideas
| 19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
| 14979 | Being alone doesn't guarantee intrinsic properties; 'being alone' is itself extrinsic [Lewis, by Sider] |
| 15454 | Extrinsic properties come in degrees, with 'brother' less extrinsic than 'sibling' [Lewis] |
| 15455 | Total intrinsic properties give us what a thing is [Lewis] |
| 15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
| 19424 | Knowledge needs clarity, distinctness, and adequacy, and it should be intuitive [Leibniz] |
| 15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |
| 19427 | True ideas represent what is possible; false ideas represent contradictions [Leibniz] |
| 19425 | In the schools the Four Causes are just lumped together in a very obscure way [Leibniz] |