4 ideas
10053 | Geometrical axioms imply the propositions, but the former may not be true [Russell] |
10052 | Geometry is united by the intuitive axioms of projective geometry [Russell, by Musgrave] |
3016 | Even the gods cannot strive against necessity [Pittacus, by Diog. Laertius] |
467 | A virtue is a combination of intelligence, strength and luck [Ion] |