integrity

...the poet makes no specific statements of fact, and hence is not judged by the truth or falsehood of what he says. The poet...is judged by the integrity or consistency of his verbal structure. The reason is that he imitates the universal, not the particular; he is concerned not with what happened but with what happens.

—Northrop Frye, Fables of Identity: Studies in Poetic Mythology (Harcourt, 1963)