Full Idea
The Quinean claims that the application of a predicate cannot, in principle, be explained - it is a 'primitive' fact.
Gist of Idea
Quineans say that predication is primitive and inexplicable
Source
Douglas Edwards (Properties [2014], 4.4)
Book Reference
Edwards,Douglas: 'Properties' [Polity 2014], p.74
A Reaction
I am not clear what 'principle' could endorse this claim. There just seems to be a possible failure of all the usual attempts at explaining predication.