4 ideas
9565 | Zermelo made 'set' and 'member' undefined axioms [Zermelo, by Chihara] |
3339 | For Zermelo's set theory the empty set is zero and the successor of each number is its unit set [Zermelo, by Blackburn] |
7667 | There are two sides to men - the pleasantly social, and the violent and creative [Diderot, by Berlin] |
6017 | Nomos is king [Pindar] |