5 ideas
21554 | Sets always exceed terms, so all the sets must exceed all the sets [Lackey] |
21553 | It seems that the ordinal number of all the ordinals must be bigger than itself [Lackey] |
13165 | Geometrical proofs do not show causes, as when we prove a triangle contains two right angles [Proclus] |
20653 | Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson] |
9569 | The origin of geometry started in sensation, then moved to calculation, and then to reason [Proclus] |