3 ideas
10190 | From the axiomatic point of view, mathematics is a storehouse of abstract structures [Bourbaki] |
20653 | Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson] |
16745 | No one even knows the nature and properties of a fly - why it has that colour, or so many feet [Bacon,R] |