Full Idea
If someone accepts a framework for a kind of entities, then he must admit the entities as possible designata. Thus the question of the admissibility of entities is reduced to the question of the acceptability of the linguistic framework for the entities.
Gist of Idea
A linguistic framework involves commitment to entities, so only commitment to the framework is in question
Source
Rudolph Carnap (Empiricism, Semantics and Ontology [1950], 4)
Book Reference
Carnap,Rudolph: 'Meaning and Necessity (2nd ed)' [Chicago 1988], p.217
A Reaction
Despite the many differences of opinion between Quine and Carnap, this appears to be a straight endorsement by Carnap of the Quinean conception of ontological commitment.