Education
B. A., University of Wisconsin, 1956
M. A., Harvard University, 1957
Ph.D., Harvard University, 1959

Employment
1959–1961 Instructor, Columbia University
1961–1964 Assistant Professor,
Columbia University
1964–1968 Associate Professor,
Columbia University
1965 Visiting Associate Professor,
University of California, Berkeley
1968–2009 Professor, Columbia University
1988 Visiting Professor,
University of Konstanz, Germany
(August–September)
2009- Professor Emeritus, Columbia University