display all the ideas for this combination of texts
4 ideas
224 | When questions are doubtful we should concentrate not on objects but on ideas of the intellect [Plato] |
232 | Opposites are as unlike as possible [Plato] |
8937 | Plato's 'Parmenides' is the greatest artistic achievement of the ancient dialectic [Hegel on Plato] |
8623 | Proof reveals the interdependence of truths, as well as showing their certainty [Euclid, by Frege] |