7 ideas
| 21552 | Common speech is vague; its vocabulary and syntax must be modified, for precision [Russell] |
| 3653 | My Meditations are the complete foundation of my physics [Descartes] |
| 21551 | Empirical words need ostensive definition, which makes them egocentric [Russell] |
| 4736 | Truth is such a transcendentally clear notion that it cannot be further defined [Descartes] |
| 490 | Everything happens by reason and necessity [Leucippus] |
| 21550 | Science reduces indexicals to a minimum, but they can never be eliminated from empirical matters [Russell] |
| 3652 | I can't prove the soul is indestructible, only that it is separate from the mortal body [Descartes] |