During his long life, Louis Dembitz Brandeis had four related but distinct careers. After graduating from Harvard Law School and practicing law for a year in St. Louis, Missouri, he became a highly successful attorney in Boston, Massachusetts, and a pioneer in several aspects of legal practice, including that of donating services, without fee, on behalf of public causes. Then, beginning in the mid- 1890s, he devoted increasing efforts to various reform crusades, to emerge as one of the country’s leading progressive reformers. In August 1914 he assumed the leadership of American Zionism, successfully shaping a tiny and impotent organization into an efficient and effective social movement aimed at securing a Jewish homeland in Palestine. Finally, from 1916 until his retirement in 1939, Brandeis served as one of the most respected and venerated associate justices in the history of the Supreme Court. His work in any one of those four fields would have entitled him to a place in U.S. history; his prominence in all of them merits his recognition as one of America’s most accomplished and influential figures.