How to tell the truth in literature

Salon has an interesting excerpt from "Why I Read: The Serious Pleasures of Books" by Wendy Lesser

To tell the truth in literature, each era, perhaps even each new writer, requires a new set of authorial skills with which to rivet the reader’s attention. We are so good at lying to ourselves, at lapsing into passive acceptance, that mere transparency of meaning is insufficient. To absorb new and difficult truths, we need the jolt offered by a fresh style. Yet what is startling at first eventually hardens into either a mannerism or a tradition. Even Swift’s “A Modest Proposal,” if read too early and too often (in a classroom setting, say), can come to seem a mere example of Satire. So every writer—every good writer, every writer who really has something to say—must figure out for herself a new form in which to say it. The figuring need not be conscious, and the innovation need not be dramatic or obvious; we can be affected by style without necessarily perceiving the sources of the effects. But if we do perceive them, they cannot detract from our sense of the writer’s seriousness (a seriousness that, in the case of an innovator like Mark Twain, may partake of a great deal of humor). The structural and stylistic eccentricities must seem—and be— essential, not merely ornamental.