1965.... Honorary Trustee of the James Joyce Association.
1994 -. Honorary President of the IASS/AIS
1991 - . Honorary Fellow, Rewley House I (now Kellogg College), Oxford.
1992-93 Member of the International Forum of Unesco
1992 - Member of the Académie Universelle des Cultures, Paris.
1994 - Member of the Academy of Sciences of Bologna.
1998 - Member of the Academia Europea de Yuste
1998 - Honorary Member of the American Academy of Arts and Letters
2002 Honorary Fellow, St: Anne’s College, Oxford.
2003…… Member of the Council of Advisors of the Bibliotheca Alexandrina
2006 Foreign Member of the Polish Academy of Arts and Sciences
Member of the editorial board of Semiotica, Poetics Today, Degrès, Structuralist Review, Text, Communication, Problemi dell'informazione, Word & Images, etc.