4 ideas
19695 | The devil was wise as an angel, and lost no knowledge when he rebelled [Whitcomb] |
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] |
5655 | Happiness is not satisfaction of desires, but fulfilment of values [Bradley, by Scruton] |