He served as provost of Princeton University between 1977 and 1988, as executive vice-president of the Andrew W. Mellon Foundation from 1988 to 1991, and as president of Harvard University from 1991 to 2001.
He served as provost of Princeton University between 1977 and 1988 from 1988 to 1991, and as president of Harvard University from 1991 to 2001. This was as executive vice-president of the Andrew W. Mellon Foundation.