6 ideas
3653 | My Meditations are the complete foundation of my physics [Descartes] |
4736 | Truth is such a transcendentally clear notion that it cannot be further defined [Descartes] |
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
6409 | The 'simple theory of types' distinguishes levels among properties [Ramsey, by Grayling] |
3212 | Beliefs are maps by which we steer [Ramsey] |
3652 | I can't prove the soul is indestructible, only that it is separate from the mortal body [Descartes] |