12 ideas
| 14767 | The demonstrations of the metaphysicians are all moonshine [Peirce] |
| 5021 | An idea is analysed perfectly when it is shown a priori that it is possible [Leibniz] |
| 14764 | I am saturated with the spirit of physical science [Peirce] |
| 19426 | 'Nominal' definitions just list distinguishing characteristics [Leibniz] |
| 19424 | Knowledge needs clarity, distinctness, and adequacy, and it should be intuitive [Leibniz] |
| 14768 | Infallibility in science is just a joke [Peirce] |
| 14765 | Association of ideas is the best philosophical idea of the prescientific age [Peirce] |
| 5020 | Our thoughts are either dependent, or self-evident. All thoughts seem to end in the self-evident [Leibniz] |
| 14766 | Duns Scotus offers perhaps the best logic and metaphysics for modern physical science [Peirce] |
| 19427 | True ideas represent what is possible; false ideas represent contradictions [Leibniz] |
| 5019 | Supreme human happiness is the greatest possible increase of his perfection [Leibniz] |
| 19425 | In the schools the Four Causes are just lumped together in a very obscure way [Leibniz] |