84 ideas
22115 | Wise people should contemplate and discuss the truth, and fight against falsehood [Aquinas] |
19359 | Leibniz aims to give coherent rational support for empiricism [Leibniz, by Perkins] |
13086 | Metaphysics is a science of the intelligible nature of being [Leibniz, by Cover/O'Leary-Hawthorne] |
16710 | Leibniz tried to combine mechanistic physics with scholastic metaphysics [Leibniz, by Pasnau] |
16897 | Reason is the faculty for grasping apriori necessary truths [Leibniz, by Burge] |
3346 | For Leibniz rationality is based on non-contradiction and the principle of sufficient reason [Leibniz, by Benardete,JA] |
3347 | Leibniz said the principle of sufficient reason is synthetic a priori, since its denial is not illogical [Leibniz, by Benardete,JA] |
8627 | Leibniz is inclined to regard all truths as provable [Leibniz, by Frege] |
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13234 | The view of logic as knowing a body of truths looks out-of-date [Beall/Restall] |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] |
9147 | Number cannot be defined as addition of ones, since that needs the number; it is a single act of abstraction [Fine,K on Leibniz] |
19375 | The continuum is not divided like sand, but folded like paper [Leibniz, by Arthur,R] |
18080 | A tangent is a line connecting two points on a curve that are infinitely close together [Leibniz] |
18081 | Nature uses the infinite everywhere [Leibniz] |
7565 | Leibniz proposes monads, since there must be basic things, which are immaterial in order to have unity [Leibniz, by Jolley] |
10419 | If relations can be reduced to, or supervene on, monadic properties of relata, they are not real [Leibniz, by Swoyer] |
13078 | Relations aren't in any monad, so they are distributed, so they are not real [Leibniz] |
12713 | Forms have sensation and appetite, the latter being the ability to act on other bodies [Leibniz, by Garber] |
13087 | The essence of a thing is its real possibilities [Leibniz, by Cover/O'Leary-Hawthorne] |
12701 | Leibniz moved from individuation by whole entity to individuation by substantial form [Leibniz, by Garber] |
13105 | The laws-of-the-series plays a haecceitist role [Leibniz, by Cover/O'Leary-Hawthorne] |
16513 | Identity of a substance is the law of its persistence [Leibniz] |
12035 | Leibniz bases pure primitive entities on conjunctions of qualitative properties [Leibniz, by Adams,RM] |
13091 | Leibnizian substances add concept, law, force, form and soul [Leibniz, by Cover/O'Leary-Hawthorne] |
7561 | Substances are essentially active [Leibniz, by Jolley] |
12715 | Leibniz strengthened hylomorphism by connecting it to force in physics [Leibniz, by Garber] |
11878 | Leibniz's view (that all properties are essential) is extreme essentialism, not its denial [Leibniz, by Mackie,P] |
11862 | Leibniz was not an essentialist [Leibniz, by Wiggins] |
16504 | Two eggs can't be identical, because the same truths can't apply to both of them [Leibniz] |
8650 | Things are the same if one can be substituted for the other without loss of truth [Leibniz] |
13828 | Necessary truths are those provable from identities by pure logic in finite steps [Leibniz, by Hacking] |
13244 | Relevant necessity is always true for some situation (not all situations) [Beall/Restall] |
13084 | How can things be incompatible, if all positive terms seem to be compatible? [Leibniz] |
4307 | A reason must be given why contingent beings should exist rather than not exist [Leibniz] |
15883 | Leibniz narrows down God's options to one, by non-contradiction, sufficient reason, indiscernibles, compossibility [Leibniz, by Harré] |
18822 | Each monad expresses all its compatible monads; a possible world is the resulting equivalence class [Leibniz, by Rumfitt] |
7837 | Leibniz proposed possible worlds, because they might be evil, where God would not create evil things [Leibniz, by Stewart,M] |
13080 | Leibniz has a counterpart view of de re counterfactuals [Leibniz, by Cover/O'Leary-Hawthorne] |
19332 | For Leibniz, divine understanding grasps every conceivable possibility [Leibniz, by Perkins] |
5509 | Leibniz said dualism of mind and body is illusion, and there is only mind [Leibniz, by Martin/Barresi] |
7568 | Leibniz is an idealist insofar as the basic components of his universe are all mental [Leibniz, by Jolley] |
13092 | The essence of substance is the law of its changes, as in the series of numbers [Leibniz] |
19354 | Leibniz introduced the idea of degrees of consciousness, essential for his monads [Leibniz, by Perkins] |
7841 | We think we are free because the causes of the will are unknown; determinism is a false problem [Leibniz] |
5510 | Leibniz has a panpsychist view that physical points are spiritual [Leibniz, by Martin/Barresi] |
20700 | Without God's influence every operation would stop, so God causes everything [Aquinas] |
7564 | Occasionalism give a false view of natural laws, miracles, and substances [Leibniz, by Jolley] |
13239 | Judgement is always predicating a property of a subject [Beall/Restall] |
19372 | Concepts are ordered, and show eternal possibilities, deriving from God [Leibniz, by Arthur,R] |
13467 | Leibniz was the first modern to focus on sentence-sized units (where empiricists preferred word-size) [Leibniz, by Hart,WD] |
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] |
19365 | Limited awareness leads to bad choices, and unconscious awareness makes us choose the bad [Leibniz, by Perkins] |
8110 | Leibniz identified beauty with intellectual perfection [Leibniz, by Gardner] |
7569 | Humans are moral, and capable of reward and punishment, because of memory and self-consciousness [Leibniz, by Jolley] |
7574 | Natural law theory is found in Aquinas, in Leibniz, and at the Nuremberg trials [Leibniz, by Jolley] |
12728 | Leibniz rejected atoms, because they must be elastic, and hence have parts [Leibniz, by Garber] |
19374 | Microscopes and the continuum suggest that matter is endlessly divisible [Leibniz] |
7560 | Leibniz struggled to reconcile bodies with a reality of purely soul-like entities [Jolley on Leibniz] |
16683 | Leibniz eventually said resistance, rather than extension, was the essence of body [Leibniz, by Pasnau] |
12725 | Leibniz wanted to explain motion and its laws by the nature of body [Leibniz, by Garber] |
16507 | The law within something fixes its persistence, and accords with general laws of nature [Leibniz] |
7859 | Leibniz had an unusual commitment to the causal completeness of physics [Leibniz, by Papineau] |
15307 | Leibniz uses 'force' to mean both activity and potential [Leibniz] |
15202 | Eternity coexists with passing time, as the centre of a circle coexists with its circumference [Aquinas] |
3889 | God's existence is either necessary or impossible [Leibniz, by Scruton] |
7842 | Leibniz was closer than Spinoza to atheism [Leibniz, by Stewart,M] |