3 ideas
18151 | Could we replace sets by the open sentences that define them? [Chihara, by Bostock] |
20921 | How can we state relativism of sweet and sour, if they have no determinate nature? [Theophrastus] |
5994 | Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG] |