display all the ideas for this combination of texts
3 ideas
| 5969 | Chrysippus said the uncaused is non-existent [Chrysippus, by Plutarch] |
| 15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
| 8368 | A correct definition is what can be substituted without loss of meaning [Ducasse] |