4 ideas
15549 | If it were true that nothing at all existed, would that have a truthmaker? [Lewis] |
17606 | Axioms reveal the underlying assumptions, and reveal relationships between different areas [Kline] |
2614 | Modern phenomenalism holds that objects are logical constructions out of sense-data [Ayer] |
2615 | The concept of sense-data allows us to discuss appearances without worrying about reality [Ayer] |