Full Idea
Translation into a substitutional language does not force the ontology. It remains, literally, and until the case for reference can be made, a façon de parler. That is the way the nominalist would like to keep it.
Gist of Idea
Substitutional language has no ontology, and is just a way of speaking
Source
Ruth Barcan Marcus (Nominalism and Substitutional Quantifiers [1978], p.166)
Book Reference
'Philosophy of Logic: an anthology', ed/tr. Jacquette,Dale [Blackwell 2002], p.166