display all the ideas for this combination of texts
4 ideas
17679 | All instances of some property are strictly identical [Armstrong] |
15728 | The naturalness of a class depends as much on the observers as on the objects [Quinton] |
9407 | Properties imply natural classes which can be picked out by everybody [Quinton] |
12677 | Armstrong holds that all basic properties are categorical [Armstrong, by Ellis] |