3 ideas
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
9145 | We form the image of a cardinal number by a double abstraction, from the elements and from their order [Cantor] |
19414 | Men are related to animals, which are related to plants, then to fossils, and then to the apparently inert [Leibniz] |