Book excerpt: From the Pulitzer Prize–winning bestselling author of Alexander Hamilton, the inspiration for the hit Broadway musical, comes this definitive biography of the Warburgs, one of the great German-Jewish banking families of the twentieth century. Bankers, philanthropists, scholars, socialites, artists, and politicians, the Warburgs stood at the pinnacle of German (and, later, of German-American) Jewry. They forged economic dynasties, built mansions and estates, assembled libraries, endowed charities, and advised a German kaiser and two American presidents. But their very success made the Warburgs lightning rods for anti-Semitism, and their sense of patriotism became increasingly dangerous in a Germany that had declared Jews the enemy. Ron Chernow's hugely fascinating history is a group portrait of a clan whose members were renowned for their brilliance, culture, and personal energy yet tragically vulnerable to the dark and irrational currents of the twentieth century.