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] |
2596 | Maybe mind and body are parallel, like two good clocks [Leibniz] |
20713 | God must be fit for worship, but worship abandons morally autonomy, but there is no God [Rachels, by Davies,B] |
2595 | If the universe is a perfect agreement of uncommunicating substances, there must be a common source [Leibniz] |