6 ideas
| 16668 | Modes of things exist in some way, without being full-blown substances [Gassendi] |
| 15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
| 15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |
| 9409 | Laws are the best axiomatization of the total history of world events or facts [Lewis, by Mumford] |
| 9423 | If simplicity and strength are criteria for laws of nature, that introduces a subjective element [Mumford on Lewis] |
| 9424 | A number of systematizations might tie as the best and most coherent system [Mumford on Lewis] |