4 ideas
3750 | "It is true that x" means no more than x [Ramsey] |
10800 | The values of variables can't determine existence, because they are just expressions [Ryle, by Quine] |
9807 | In pursuing truth, anything less certain than mathematics is a waste of time [Descartes] |
18818 | Sentence meaning is given by the actions to which it would lead [Ramsey] |