4 ideas
18256 | Quantity is inconceivable without the idea of addition [Frege] |
9831 | Geometry appeals to intuition as the source of its axioms [Frege] |
19000 | Read 'all ravens are black' as about ravens, not as about an implication [Belnap] |
21788 | The moral will is self-determining, but the ethical will is met in society [Houlgate] |