5 ideas
527 | Everything exists which anyone perceives [Metrodorus of Chios] |
21997 | In Marxism the state will be superseded [Singer] |
21993 | Materialist history says we are subject to incomprehensible forces [Singer] |
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] |