8 ideas
| 7085 | The main problem of philosophy is what can and cannot be thought and expressed [Wittgenstein, by Grayling] |
| 23463 | Atomic facts correspond to true elementary propositions [Wittgenstein] |
| 15642 | If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle] |
| 15645 | Nominal essence are the observable properties of things [Eagle] |
| 15643 | Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle] |
| 23490 | A thought is mental constituents that relate to reality as words do [Wittgenstein] |
| 15641 | Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle] |
| 4398 | An event causes another just if the second event would not have happened without the first [Lewis, by Psillos] |