Full Idea
The doctrine of ontological commitment becomes a central element in a theory of ontology if one merely adds that a particular theory is, in fact, true
Gist of Idea
To get an ontology from ontological commitment, just add that some theory is actually true
Source
Tim Maudlin (The Metaphysics within Physics [2007], 3.1)
Book Reference
Maudlin,Tim: 'The Metaphysics within Physics' [OUP 2007], p.81
A Reaction
Helpful. I don't think the truth of a theory entails the actual existence of every component mentioned in the theory, as some of them may be generalisations, abstractions, vague, or even convenient linking fictions.