  One nominalist option is to show that the roles associated with propositions (e.g. being truth-bearers and objects of propositional attitudes) are actually played by concrete objects. One common thought here is to propose that sentences play the roles associated by propositions. This strategy is exemplified by Quine. In Word and Object he proposes eternal sentences as truth-bearers (Quine 1960, 208). Eternal sentences are better as truth-bearers than other sentences in being true or false independently of time, place, speaker and the like. But they are as bad as other sentences in admitting of variation in truth value from one language to another (Quine 1969,  142).[18]  But note that from the point of view of a nominalist about abstract objects, there is a much worse problem with eternal sentences, namely that they may be abstract objects. They may be abstract objects because they are sentence types, and a type may be an abstract object, for instance if one takes them to be sets or abstract universals (admittedly one might attempt to take them to be non-abstract universals).