12 ideas
| 10304 | Very few things in set theory remain valid in intuitionist mathematics [Bernays] |
| 10303 | Restricted Platonism is just an ideal projection of a domain of thought [Bernays] |
| 10306 | Mathematical abstraction just goes in a different direction from logic [Bernays] |
| 5845 | Niceratus learnt the whole of Homer by heart, as a guide to goodness [Xenophon] |
| 5833 | Education is the greatest of human goods [Xenophon] |
| 24162 | Planck introduced the idea that energy can be quantized [Baggott] |
| 21731 | Fields can be 'scalar', or 'vector', or 'tensor', or 'spinor' [Baggott] |
| 21730 | A 'field' is a property with a magnitude, distributed across all of space and time [Baggott] |
| 24163 | Free electrons have clouds of virtual particles, arising from field interaction [Baggott] |
| 24161 | Thermodynamics sees nature as a continuous flow of energy, as radiation and as substance [Baggott] |
| 21732 | The current standard model requires 61 particles [Baggott] |
| 24160 | Particle measurements don't seem to reflect their reality [Baggott] |