Dr. Paul Dudley White was the premier heart specialist of this century. He was recognized as an outstanding bedside doctor, a great teacher, and a widely respected investigator. By his optimism, his pioneer message encouraging physical activity, and his emphasis on avoiding unnecessary invalidism, he changed the outlook of thousands of patients with heart disease and changed it for the better. He was the heart specialist called to see President Eisenhower at the time of his heart attack, and by his frank and authoritative discussions with representatives of the media set a precedent for the handling of all future Presidential illnesses. Known around the world, he used his position as a noted scientist and humanitarian to foster international understanding and the quest for world peace.