12 ideas
| 22334 | Analysis must include definitions, search for simples, concept analysis, and Kant's analysis [Glock] |
| 11022 | Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read] |
| 11065 | The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna] |
| 11023 | The logical connectives are 'defined' by their introduction rules [Gentzen] |
| 11213 | Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen] |
| 13832 | Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking] |
| 10067 | Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave] |
| 22332 | German and British idealism is not about individual ideas, but the intelligibility of reality [Glock] |
| 6027 | From the fact that some men die, we cannot infer that they all do [Philodemus] |
| 22335 | The variety of uses of 'game' may be that it has several meanings, and isn't a single concept [Glock] |
| 22336 | We might say that the family resemblance is just a consequence of meaning-as-use [Glock] |
| 22241 | Don't fear god or worry about death; the good is easily got and the terrible easily cured [Philodemus] |