3 ideas
8693 | An 'abstraction principle' says two things are identical if they are 'equivalent' in some respect [Boolos] |
1497 | For Anaximenes nature is air, which takes different forms by rarefaction and condensation [Anaximenes, by Simplicius] |
5994 | Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG] |