5 ideas
13342 | Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap] |
13251 | Each person is free to build their own logic, just by specifying a syntax [Carnap] |
20752 | For man, being is not what he is, but what he is going to be [Ortega y Gassett] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
20756 | Instead of having a nature, man only has a history [Ortega y Gassett] |