4 ideas
22140 | The greatest philosophers are methodical; it is what makes them great [Grice] |
22102 | Arguing with opponents uncovers truths, and restrains falsehoods [Aquinas] |
7791 | The simplest of the logics based on possible worlds is Lewis's S5 [Lewis,CI, by Girle] |
11002 | Equating necessity with informal provability is the S4 conception of necessity [Lewis,CI, by Read] |