7 ideas
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] |
21991 | The middle class gain freedom through property, but workers can only free all of humanity [Marx, by Singer] |
21990 | Theory is as much a part of a revolution as material force is [Marx] |
16713 | Philosophers are the forefathers of heretics [Tertullian] |
7128 | Religion is the opium of the people, and real happiness requires its abolition [Marx] |
6610 | I believe because it is absurd [Tertullian] |