5 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] |
16654 | Our words and concepts don't always correspond to what is out there [William of Ockham] |
20945 | Belief is no more rational than is tasting and smelling [Hamann] |
7666 | God is not a mathematician, but a poet [Hamann, by Berlin] |