Corey Robin in The Chronicle of Higher Education:
As an archetype, the public intellectual is a conflicted being, torn in two competing directions.
On the one hand, he’s supposed to be called by some combination of the two vocations Max Weber set out in his lectures in Munich: that of the scholar and that of the statesman. Neither academic nor activist but both, the public intellectual is a monkish figure of austere purpose and unadorned truth. Think Noam Chomsky.
On the other hand, the public intellectual is supposed to possess a distinct and self-conscious sense of style, calling attention to itself and to the stylist. More akin to a celebrity, this public intellectual bears little resemblance to Weber’s man of knowledge or man of action. He lacks the integrity and intensity of both. He makes us feel as if we are in the presence of an actor too attentive to his audience, a mind too mindful of its reception. Think Bernard-Henri Lévy.
Yet that attention to image and style, audience and reception, may not only be not antithetical to the vocation of the public intellectual; it may actually serve it. The public intellectual stands between Weber’s two vocations because he wants his writing to do something in the world. “He never wrote a sentence that has any interest in itself,” Ezra Pound said of Lenin, “but he evolved almost a new medium, a sort of expression halfway between writing and action.”
The public intellectual is not simply interested in a wide audience of readers, in shopping her ideas on the op-ed page to sell more books. She’s not looking for markets or hungry for a brand. She’s not an explainer or a popularizer. She is instead the literary equivalent of the epic political actor, who sees her writing as a transformative mode of action, a thought-deed in the world. The transformation she seeks may be a far-reaching change of policy, an education of manners and morals, or a renovation of the human estate. Her watch may be wound for tomorrow or today. But whatever her aim or time frame, the public intellectual wants her writing to have an effect, to have all the power of power itself.
More here.