On his deathbed, Plato envisioned his dialogues becoming sophistic texts open to a variety of interpretations, none by itself true to the original. Contemporary histories of rhetoric largely dismiss Plato's anxiety, portraying the dialogues as successful in asserting a constant meaning through all of rhetoric's history.

In Plato's Dream of Sophistry, Richard Marback shows that Plato's vision was remarkably accurate. Against histories of rhetoric that described Plato's influence mainly in terms of his overarching dominance, Marback argues that Plato's lasting influence results not from the force of the dialogues themselves but from continued investments in arguing about the dialogues.

Having documented the many uses to which Plato has been put in the Western rhetorical tradition, Marback concludes Plato's Dream of Sophistry with a discussion of how a more nuanced history of Plato's influence on rhetoric helps transcend current debates that pit the Platonic against the sophistic.