8 ideas
| 19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
| 16669 | Everything that exists is either a being, or some mode of a being [Malebranche] |
| 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] |
| 1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
| 19425 | In the schools the Four Causes are just lumped together in a very obscure way [Leibniz] |
| 12726 | In a true cause we see a necessary connection [Malebranche] |
| 5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |