3 ideas
10632 | The real numbers may be introduced by abstraction as ratios of quantities [Hale, by Hale/Wright] |
20544 | Berlin distinguishes 'negative' and 'positive' liberty, and rejects the latter [Berlin, by Swift] |
5994 | Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG] |