4 ideas
9548 | A mathematical object exists if there is no contradiction in its definition [Waterfield] |
4042 | Metaphysics requires the idea of people (speakers) located in space and time [Davidson] |
4041 | Sentences held true determine the meanings of the words they contain [Davidson] |
9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |