7 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
12430 | Classical logic is our preconditions for assessing empirical evidence [Kitcher] |
12431 | I believe classical logic because I was taught it and use it, but it could be undermined [Kitcher] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
490 | Everything happens by reason and necessity [Leucippus] |
12428 | Many necessities are inexpressible, and unknowable a priori [Kitcher] |
12429 | Knowing our own existence is a priori, but not necessary [Kitcher] |