Emile (1800-75) and Isaac Pereire (1806-80) were pivotal and sensational figures, their lives and careers a lens through which to re-examine the history of France in the nineteenth century. They were among the first generation of Jews emancipated by the French Revolution. Significant Saint-Simonians, they contributed to its philosophy of financial and economic reform. They were among the first to implement the new rail technology in France and their Saint-Simonian understanding that major railway development required investment capital on an unprecedented scale saw them launch the first...