4 ideas
18256 | Quantity is inconceivable without the idea of addition [Frege] |
9992 | The 'extension of a concept' in general may be quantitatively completely indeterminate [Cantor] |
9831 | Geometry appeals to intuition as the source of its axioms [Frege] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |