3 ideas
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] |
3102 | Why don't we experience or remember going to sleep at night? [Magee] |
11968 | The intension of a sentence is the set of all possible worlds in which it is true [Carnap, by Kaplan] |