In this important work of historical restoration, Amos Elon shows how a persecuted clan of cattle dealers and wandering peddlers was transformed into a stunningly successful community of writers, philosophers, scientists, tycoons, and activists. In engaging, brilliantly etched portraits of Moses Mendelssohn, Heinrich Heine, Karl Marx, Hannah Arendt, and many others, Elon traces how a small minority came to be perceived as a deadly threat to German national integrity.