Full Idea
We look to bound variables in connection with ontology not in order to know what there is, but in order to know what a given remark or doctrine, ours or someone else's, says there is.
Gist of Idea
We study bound variables not to know reality, but to know what reality language asserts
Source
Willard Quine (On What There Is [1948], p.15)
Book Reference
Quine,Willard: 'From a Logical Point of View' [Harper and Row 1963], p.15