13 ideas
23633 | Many truths seem obvious, and point to universal agreement - which is what we find [Reid] |
5163 | Basic propositions refer to a single experience, are incorrigible, and conclusively verifiable [Ayer] |
5167 | The argument from analogy fails, so the best account of other minds is behaviouristic [Ayer] |
23630 | Only philosophers treat ideas as objects [Reid] |
5164 | A statement is meaningful if observation statements can be deduced from it [Ayer] |
5165 | Directly verifiable statements must entail at least one new observation statement [Ayer] |
5166 | The principle of verification is not an empirical hypothesis, but a definition [Ayer] |
23629 | The ambiguity of words impedes the advancement of knowledge [Reid] |
5162 | Sentences only express propositions if they are meaningful; otherwise they are 'statements' [Ayer] |
5168 | Moral approval and disapproval concerns classes of actions, rather than particular actions [Ayer] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
23632 | Similar effects come from similar causes, and causes are only what are sufficient for the effects [Reid] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |