23 ideas
21544 | It seems that when a proposition is false, something must fail to subsist [Russell] |
11211 | If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt] |
21539 | Excluded middle can be stated psychologically, as denial of p implies assertion of not-p [Russell] |
11212 | The sense of a connective comes from primitively obvious rules of inference [Rumfitt] |
11210 | Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt] |
21538 | If two people perceive the same object, the object of perception can't be in the mind [Russell] |
21534 | The only thing we can say about relations is that they relate [Russell] |
21540 | Relational propositions seem to be 'about' their terms, rather than about the relation [Russell] |
304 | Beautiful things must be different from beauty itself, but beauty itself must be present in each of them [Plato] |
21536 | When I perceive a melody, I do not perceive the notes as existing [Russell] |
21535 | Objects only exist if they 'occupy' space and time [Russell] |
21533 | Contingency arises from tensed verbs changing the propositions to which they refer [Russell] |
16120 | Knowing how to achieve immortality is pointless without the knowledge how to use immortality [Plato] |
21537 | I assume we perceive the actual objects, and not their 'presentations' [Russell] |
21532 | Full empiricism is not tenable, but empirical investigation is always essential [Russell] |
303 | Say how many teeth the other has, then count them. If you are right, we will trust your other claims [Plato] |
21542 | Do incorrect judgements have non-existent, or mental, or external objects? [Russell] |
21541 | The complexity of the content correlates with the complexity of the object [Russell] |
21543 | If p is false, then believing not-p is knowing a truth, so negative propositions must exist [Russell] |
11214 | We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt] |
302 | What knowledge is required to live well? [Plato] |
301 | Only knowledge of some sort is good [Plato] |
305 | Something which lies midway between two evils is better than either of them [Plato] |