43 ideas
13252 | Some truths have true negations [Beall/Restall] |
13247 | A truthmaker is an object which entails a sentence [Beall/Restall] |
13249 | (∀x)(A v B) |- (∀x)A v (∃x)B) is valid in classical logic but invalid intuitionistically [Beall/Restall] |
13243 | Excluded middle must be true for some situation, not for all situations [Beall/Restall] |
13242 | It's 'relevantly' valid if all those situations make it true [Beall/Restall] |
13245 | Relevant consequence says invalidity is the conclusion not being 'in' the premises [Beall/Restall] |
13246 | Relevant logic does not abandon classical logic [Beall/Restall] |
13254 | A doesn't imply A - that would be circular [Beall/Restall] |
13255 | Relevant logic may reject transitivity [Beall/Restall] |
13250 | Free logic terms aren't existential; classical is non-empty, with referring names [Beall/Restall] |
13235 | Logic studies consequence; logical truths are consequences of everything, or nothing [Beall/Restall] |
13238 | Syllogisms are only logic when they use variables, and not concrete terms [Beall/Restall] |
13234 | The view of logic as knowing a body of truths looks out-of-date [Beall/Restall] |
13232 | Logic studies arguments, not formal languages; this involves interpretations [Beall/Restall] |
13241 | The model theory of classical predicate logic is mathematics [Beall/Restall] |
13253 | There are several different consequence relations [Beall/Restall] |
13240 | A sentence follows from others if they always model it [Beall/Restall] |
13236 | Logical truth is much more important if mathematics rests on it, as logicism claims [Beall/Restall] |
13237 | Preface Paradox affirms and denies the conjunction of propositions in the book [Beall/Restall] |
13244 | Relevant necessity is always true for some situation (not all situations) [Beall/Restall] |
8143 | Self is the rider, intellect the charioteer, mind the reins, and body the chariot [Anon (Upan)] |
8147 | We have an apparent and a true self; only the second one exists, and we must seek to know it [Anon (Upan)] |
13239 | Judgement is always predicating a property of a subject [Beall/Restall] |
8155 | Without speech we cannot know right/wrong, true/false, good/bad, or pleasant/unpleasant [Anon (Upan)] |
13248 | We can rest truth-conditions on situations, rather than on possible worlds [Beall/Restall] |
13233 | Propositions commit to content, and not to any way of spelling it out [Beall/Restall] |
8142 | The wise prefer good to pleasure; the foolish are drawn to pleasure by desire [Anon (Upan)] |
541 | Virtue comes more from habit than character [Critias] |
8151 | Let your teacher be a god to you [Anon (Upan)] |
8153 | By knowing one piece of clay or gold, you know all of clay or gold [Anon (Upan)] |
8154 | Originally there must have been just Existence, which could not come from non-existence [Anon (Upan)] |
8148 | Brahma, supreme god and protector of the universe, arose from the ocean of existence [Anon (Upan)] |
8144 | Brahman is the Uncaused Cause [Anon (Upan)] |
8152 | Earth, food, fire, sun are all forms of Brahman [Anon (Upan)] |
542 | Fear of the gods was invented to discourage secret sin [Critias] |
8159 | Damayata - be self-controlled! Datta - be charitable! Dayadhwam - be compassionate! [Anon (Upan)] |
8156 | The gods are not worshipped for their own sake, but for the sake of the Self [Anon (Upan)] |
8157 | A man with desires is continually reborn, until his desires are stilled [Anon (Upan)] |
8145 | Those ignorant of Atman return as animals or plants, according to their merits [Anon (Upan)] |
8149 | Charity and ritual observance distract from the highest good of religion [Anon (Upan)] |
8158 | Do not seek to know Brahman by arguments, for arguments are idle and vain [Anon (Upan)] |
8146 | The immortal in us is the part that never sleeps, and shapes our dreams [Anon (Upan)] |
8150 | The immortal Self and the sad individual self are like two golden birds perched on one tree [Anon (Upan)] |