7 ideas
8616 | How can multiple statements, none of which is tenable, conjoin to yield a tenable conclusion? [Elgin] |
8617 | Statements that are consistent, cotenable and supportive are roughly true [Elgin] |
17744 | De Morgan started the study of relations and their properties [De Morgan, by Walicki] |
13501 | De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD] |
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
8618 | Coherence is a justification if truth is its best explanation (not skill in creating fiction) [Elgin] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |