9 ideas
19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
17423 | The essence of natural numbers must reflect all the functions they perform [Sicha] |
17425 | To know how many, you need a numerical quantifier, as well as equinumerosity [Sicha] |
17424 | Counting puts an initial segment of a serial ordering 1-1 with some other entities [Sicha] |
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] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |