8 ideas
| 19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
| 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] |
| 22439 | There are only duties if there are rights, so truth is only for those with a right to it [Constant] |
| 22440 | Unconditional truth-telling makes a society impossible [Constant] |
| 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] |
| 5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |