Chaim Weizmann, steeped in the folk culture of the East European shtetl and the humanistic science of Central and Western Europe, was the ambassador of the Jewish people to the English-speaking world. Louis D. Brandeis, on the other hand, was known as the true exponent of Anglo-American civic culture who gave his leadership at a critical moment to the American and world Jewish community. A Clash of Heroes studies the conflict between these two dominant...