He was a professor of constitutional law from 1958 to 1961. In 1961 he moved to the Washington University College of Liberal Arts, serving as dean from 1961 to 1962, and chancellor from 1962 to 1971. He also served as vice chairman of the United States Commission on Intergovernmental Relations from 1964 to 1966 and as president of the Salzburg Global Seminar from 1971 to 1977; and as a teacher at Buckingham, Browne & Nichols School in Cambridge, Massachusetts (his high school alma mater, which had merged with another school), from 1977 to 1985.
From 1958 to 1961, he was a professor of constitutional law. He then moved into administrative roles, including serving as dean at Washington University College of Liberal Arts from 1961 to 1962, chancellor from 1962 to 1971, and vice chairman of the United States Commission on Intergovernmental Relations from 1964 to 1966. He also led the Salzburg Global Seminar from 1971 to 1977 and taught at Buckingham, Browne & Nichols School in Cambridge, Massachusetts from 1977 to 1985.