6 ideas
5035 | The two basics of reasoning are contradiction and sufficient reason [Leibniz] |
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] |
5038 | Assume that mind and body follow their own laws, but God has harmonised them [Leibniz] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
5037 | God doesn't decide that Adam will sin, but that sinful Adam's existence is to be preferred [Leibniz] |