There is seemingly no escaping the association of the language of Goethe with the language of Hitler: the two leaden cliches seem to be inseparable, suggesting a Sonderweg between enlightened sophistication and subtle beauty on the one hand and linguistic barbarism on the other. Victor Klemperer suggested that the Lingua Tertii Imperii was a perversion of German that needed to be purged from the language, but does the notion of "Nazi language" as an identifiably separate entity really hold water, or does it only reflect a desire to construct a clear demarcation line between "Germans" and...