58 ideas
21887 | Derrida focuses on other philosophers, rather than on science [Derrida] |
21888 | Philosophy is just a linguistic display [Derrida] |
21896 | Philosophy aims to build foundations for thought [Derrida, by May] |
21893 | Philosophy is necessarily metaphorical, and its writing is aesthetic [Derrida] |
21892 | Interpretations can be interpreted, so there is no original 'meaning' available [Derrida] |
20925 | Hermeneutics blunts truth, by conforming it to the interpreter [Derrida, by Zimmermann,J] |
20934 | Hermeneutics is hostile, trying to overcome the other person's difference [Derrida, by Zimmermann,J] |
21895 | Structuralism destroys awareness of dynamic meaning [Derrida] |
21934 | The idea of being as persistent presence, and meaning as conscious intelligibility, are self-destructive [Derrida, by Glendinning] |
21883 | Sincerity can't be verified, so fiction infuses speech, and hence reality also [Derrida] |
21882 | Sentences are contradictory, as they have opposite meanings in some contexts [Derrida] |
21881 | We aim to explore the limits of expression (as in Mallarmé's poetry) [Derrida] |
13838 | A decent modern definition should always imply a semantics [Hacking] |
4756 | Derrida says that all truth-talk is merely metaphor [Derrida, by Engel] |
21877 | True thoughts are inaccessible, in the subconscious, prior to speech or writing [Derrida] |
17749 | Post proved the consistency of propositional logic in 1921 [Walicki] |
17765 | Propositional language can only relate statements as the same or as different [Walicki] |
13833 | 'Thinning' ('dilution') is the key difference between deduction (which allows it) and induction [Hacking] |
13834 | Gentzen's Cut Rule (or transitivity of deduction) is 'If A |- B and B |- C, then A |- C' [Hacking] |
13835 | Only Cut reduces complexity, so logic is constructive without it, and it can be dispensed with [Hacking] |
17764 | Boolean connectives are interpreted as functions on the set {1,0} [Walicki] |
17752 | The empty set is useful for defining sets by properties, when the members are not yet known [Walicki] |
17753 | The empty set avoids having to take special precautions in case members vanish [Walicki] |
17759 | Ordinals play the central role in set theory, providing the model of well-ordering [Walicki] |
17741 | To determine the patterns in logic, one must identify its 'building blocks' [Walicki] |
13845 | The various logics are abstractions made from terms like 'if...then' in English [Hacking] |
13840 | First-order logic is the strongest complete compact theory with Löwenheim-Skolem [Hacking] |
13844 | A limitation of first-order logic is that it cannot handle branching quantifiers [Hacking] |
13842 | Second-order completeness seems to need intensional entities and possible worlds [Hacking] |
13837 | With a pure notion of truth and consequence, the meanings of connectives are fixed syntactically [Hacking] |
13839 | Perhaps variables could be dispensed with, by arrows joining places in the scope of quantifiers [Hacking] |
21878 | Names have a subjective aspect, especially the role of our own name [Derrida] |
21889 | 'I' is the perfect name, because it denotes without description [Derrida] |
21879 | Even Kripke can't explain names; the word is the thing, and the thing is the word [Derrida] |
17747 | A 'model' of a theory specifies interpreting a language in a domain to make all theorems true [Walicki] |
17748 | The L-S Theorem says no theory (even of reals) says more than a natural number theory [Walicki] |
13843 | If it is a logic, the Löwenheim-Skolem theorem holds for it [Hacking] |
17763 | Axiomatic systems are purely syntactic, and do not presuppose any interpretation [Walicki] |
17761 | A compact axiomatisation makes it possible to understand a field as a whole [Walicki] |
17758 | Ordinals are transitive sets of transitive sets; or transitive sets totally ordered by inclusion [Walicki] |
17755 | Ordinals are the empty set, union with the singleton, and any arbitrary union of ordinals [Walicki] |
17756 | The union of finite ordinals is the first 'limit ordinal'; 2ω is the second... [Walicki] |
17760 | Two infinite ordinals can represent a single infinite cardinal [Walicki] |
17757 | Members of ordinals are ordinals, and also subsets of ordinals [Walicki] |
17762 | In non-Euclidean geometry, all Euclidean theorems are valid that avoid the fifth postulate [Walicki] |
17754 | Inductive proof depends on the choice of the ordering [Walicki] |
17742 | Scotus based modality on semantic consistency, instead of on what the future could allow [Walicki] |
21890 | Heidegger showed that passing time is the key to consciousness [Derrida] |
21880 | 'Tacit theory' controls our thinking (which is why Freud is important) [Derrida] |
21886 | Meanings depend on differences and contrasts [Derrida] |
21930 | For Aristotle all proper nouns must have a single sense, which is the purpose of language [Derrida] |
21884 | Capacity for repetitions is the hallmark of language [Derrida] |
21935 | The sign is only conceivable as a movement between elusive presences [Derrida] |
21933 | Writing functions even if the sender or the receiver are absent [Derrida, by Glendinning] |
21894 | Madness and instability ('the demonic hyperbole') lurks in all language [Derrida] |
21931 | 'Dissemination' is opposed to polysemia, since that is irreducible, because of multiple understandings [Derrida, by Glendinning] |
21885 | Words exist in 'spacing', so meanings are never synchronic except in writing [Derrida] |
21891 | The good is implicitly violent (against evil), so there is no pure good [Derrida] |