9 ideas
15527 | Defining terms either enables elimination, or shows that they don't require elimination [Lewis] |
15530 | A logically determinate name names the same thing in every possible world [Lewis] |
15531 | The Ramsey sentence of a theory says that it has at least one realisation [Lewis] |
15528 | A Ramsey sentence just asserts that a theory can be realised, without saying by what [Lewis] |
15526 | There is a method for defining new scientific terms just using the terms we already understand [Lewis] |
15529 | It is better to have one realisation of a theory than many - but it may not always be possible [Lewis] |
541 | Virtue comes more from habit than character [Critias] |
23834 | Friendship is partly universal - the love of a person is like the ideal of loving everyone [Weil] |
542 | Fear of the gods was invented to discourage secret sin [Critias] |