5 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
18256 | Quantity is inconceivable without the idea of addition [Frege] |
9831 | Geometry appeals to intuition as the source of its axioms [Frege] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
6171 | Beliefs are states of the head that explain behaviour, and also items with referential truth-conditions [McGinn] |