13 ideas
8658 | For there was never yet philosopher/ That could endure the toothache patiently [Shakespeare] |
22708 | Good reasons must give way to better [Shakespeare] |
14970 | Normal system K has five axioms and rules [Cresswell] |
14971 | D is valid on every serial frame, but not where there are dead ends [Cresswell] |
14972 | S4 has 14 modalities, and always reduces to a maximum of three modal operators [Cresswell] |
14973 | In S5 all the long complex modalities reduce to just three, and their negations [Cresswell] |
14976 | Reject the Barcan if quantifiers are confined to worlds, and different things exist in other worlds [Cresswell] |
14974 | A relation is 'Euclidean' if aRb and aRc imply bRc [Cresswell] |
14975 | A de dicto necessity is true in all worlds, but not necessarily of the same thing in each world [Cresswell] |
20921 | How can we state relativism of sweet and sour, if they have no determinate nature? [Theophrastus] |
20304 | The cause of my action is in my will [Shakespeare] |
23565 | Our obedience to the king erases any crimes we commit for him [Shakespeare] |
5990 | Theophrastus doubted whether nature could be explained teleologically [Theophrastus, by Gottschalk] |