9 ideas
| 20771 | Six parts: dialectic, rhetoric, ethics, politics, physics, theology [Cleanthes, by Diog. Laertius] |
| 15970 | People generalise because it is easier to understand, and that is mistaken for deep philosophy [Feynman] |
| 13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
| 6028 | Bodies interact with other bodies, and cuts cause pain, and shame causes blushing, so the soul is a body [Cleanthes, by Nemesius] |
| 20831 | The soul suffers when the body hurts, creates redness from shame, and pallor from fear [Cleanthes] |
| 9410 | Physical Laws are rhythms and patterns in nature, revealed by analysis [Feynman] |
| 18530 | Nobody understands quantum mechanics [Feynman] |
| 17707 | We should regard space as made up of many tiny pieces [Feynman, by Mares] |
| 5993 | The ascending scale of living creatures requires a perfect being [Cleanthes, by Tieleman] |