3 ideas
20947 | Thoughts are learnt through words, so language shows the limits and shape of our knowledge [Herder] |
3299 | In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z) [Baillie] |
10245 | One geometry cannot be more true than another [Poincaré] |