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Full Idea
The proposition expressed by a sentence can be thought of as a set of possible worlds, the worlds for which its intension delivers truth.
Clarification
'Intension' is (roughly) meaning
Gist of Idea
A proposition is a set of possible worlds for which its intension delivers truth
Source
John Perry (Knowledge, Possibility and Consciousness [2001], §8.1)
Book Ref
Perry,John: 'Knowledge, Possibility and Consciousness' [MIT 2001], p.170
A Reaction
It has always struck me as important to hang on to the concept of a 'proposition' (over and above sentences). This idea gives a metaphysics for the concept, and the 'language of thought' offers appropriate brain structures. A neat picture.
| 23486 | Pictures are possible situations in logical space [Wittgenstein] |
| 4897 | A proposition is a set of possible worlds for which its intension delivers truth [Perry] |
| 8420 | A proposition is a set of possible worlds where it is true [Lewis] |
| 9654 | A proposition is a set of entire possible worlds which instantiate a particular property [Lewis] |
| 15736 | A proposition is the property of being a possible world where it holds true [Lewis] |
| 15738 | Propositions can't have syntactic structure if they are just sets of worlds [Lewis] |
| 7002 | If propositions are states of affairs or sets of possible worlds, these lack truth values [Heil] |
| 21624 | It is known that there is a cognitive loss in identifying propositions with possible worlds [Williamson] |
| 18001 | Are there partial propositions, lacking truth value in some possible worlds? [Magidor] |