10 ideas
| 8463 | Maths can be reduced to logic and set theory [Quine] |
| 10735 | Abstraction from objects won't reveal an operation's being performed 'so many times' [Geach] |
| 8461 | The category of objects incorporates the old distinction of substances and their modes [Quine] |
| 10732 | If concepts are just recognitional, then general judgements would be impossible [Geach] |
| 8462 | A hallucination can, like an ague, be identified with its host; the ontology is physical, the idiom mental [Quine] |
| 10731 | For abstractionists, concepts are capacities to recognise recurrent features of the world [Geach] |
| 10733 | The abstractionist cannot explain 'some' and 'not' [Geach] |
| 10734 | Only a judgement can distinguish 'striking' from 'being struck' [Geach] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |