4 ideas
17619 | We renounce all abstract entities [Goodman/Quine] |
13083 | The essence is the necessary properties, and the concept includes what is contingent [Leibniz] |
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] |