Full Idea
To be necessarily greater than 7 is not a trait of a number, but depends on the manner of referring to the number.
Gist of Idea
To be necessarily greater than 7 is not a trait of 7, but depends on how 7 is referred to
Source
Willard Quine (Reference and Modality [1953], §2)
Book Reference
Plantinga,Alvin: 'Essays in the Metaphysics of Modality' [OUP 2003], p.148
A Reaction
The most concise quotation of Quine's objection to 'de re' modality. The point is whether the number might have been referred to as 'the number of planets'. So many of these problems are solved by fixing unambiguous propositions first.