In 1889, Danish literary critic Georg Brandes published "Aristocratic Radicalism: An Essay on Friedrich Nietzsche," which transformed the as-yet-unknown German-Swiss philosopher into a European, and ultimately global, phenomenon. The article sparked a furious public debate between Brandes and a fellow Dane, philosopher Harald H ffding, who swiftly issued a rebuttal, "Democratic Radicalism: An Objection." What began as a scholarly disagreement over...