display all the ideas for this combination of texts
3 ideas
5896 | Speak the truth, for this alone deifies man [Pythagoras, by Porphyry] |
3051 | Pythagoras discovered the numerical relation of sounds on a string [Pythagoras, by Diog. Laertius] |
20388 | 'Necessary' conditions are requirements, and 'sufficient' conditions are guarantees [Davies,S] |