UN General Assembly
1963

6. I wish also on this occasion to extend to the Secretary-General our deepest appreciation of the remarkably effective way in which he has so far been carrying out the duties of his high office. His moral stature and his calm determination in the solution of international problems have brought a new content to the role of the United Nations and its executive and have thus enhanced its prestige and authority. The presence of U Thant at the helm of the Organization, whether in times of crisis or of "détente", Is of immeasurable value to the Organization and to the cause of peace.