Organization Italian National Academy

Yale University

University of Iowa

School of Slavonic and East European Studies, London

Linguistic Society of America

Modern Humanities Research Association (president)

Modern Language Association of America (member of editorial board, member of executive council, vice-president)

Royal Netherlands Academy

Bavarian Academy

Connecticut Academy

P.E.N.

International and American Comparative Literature Association (president)

Czechoslovak Society of Arts and Sciences in America (president)