 Geach’s argument is that in view of the mere possibility of carving out of a language L, in which the relational expressions, E1, E2, E3… are not I-predicates, sub-languages L1, L2, L3… in which these expressions are I-predicates, if Quine’s suggested proposal of reinterpretation is possible for each Ln, the user of L will be committed to any number of entities not quantified over in L, namely, for each Ln, those entities for which the I-predicate of Ln (En) gives a criterion of absolute identity. This will be so because any sentence of L will retain its truth conditions in any Ln to which it belongs, reinterpreted as Quine proposes, but “of course, it is flatly inconsistent to say that as a member of a large theory a sentence retains its truth-conditions but not its ontological commitment” (1973:299).