5 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
7496 | Rules and duties are based on the will, as that is all we control [Montaigne] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
20645 | Heat is a state of vibration, not a substance [Joule] |
20972 | Joule showed that energy converts to heat, and heat to energy [Joule, by Papineau] |