This article reviews the role of Jewish tradition in the Central European (Mitteleuropa) culture of the 19th and early 20th centuries. After confirming the Hebraic contribution to western culture, it examines the significance of the University of Berlin (1810) with regard to the assimilation of the Jews, an ultimately flawed project that placed a great deal of importance on the role of the German language, which became a kind of lingua franca (a new koiné) to enable free circulation and social ascension in the Central European Empires (Second German Empire and Austro-Hungarian Empire). It is no coincidence that Wilhelm von Humboldt was a reputable philologist, hence the assimilation of the Jews involved, in addition to separation from the s...