4 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
16458 | Semantic vagueness involves alternative and equal precisifications of the language [Lewis] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
1422 | God's existence is either necessary or impossible, and no one has shown that the concept of God is contradictory [Malcolm] |