George Weidenfeld. Photo: Gemma Levine Nazi racial policies after 1933 drove a wave of Jewish refugees westward to Britain and the United States. To measure their impact, look beyond the detonation at Los Alamos and imagine diplomacy without Henry Kissinger, computing without John von Neumann, or the theater without Tom Stoppard. In 1938, following Germany’s annexation of Austria, 19-year-old Arthur George Weidenfeld escaped to London from Vienna. In London, Arthur became George. George became a much-married Lothario who modernized Britain’s small but influential publishing sector, pursued the company and memoirs of the powerful, and, in 1976, became a life peer,...