- D.Sc., University of Chicago, USA, 1961
- D.Sc., Indiana University, USA, 1963
- L.L.D., University of Notre Dame, USA, 1965
- D.Sc., Long Island University (C.W. Post), USA, 1970
- D.Sc., Adelphi University, USA, 1972
- D.Sc., Brandeis University, USA, 1973
- D.Sc., Albert Einstein College of Medicine, USA, 1974
- D.Sc., Hofstra University, USA, 1976
- D.Sc., Harvard University, USA, 1978
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- D.Sc., Rockefeller University, USA, 1980
- D.Sc., Clarkson College, USA, 1981
- D.Sc., SUNY at Farmingdale, USA, 1983
- M.D., Buenos Aires, Argentina, 1986
- D.Sc., Rutgers University, USA, 1988
- D.Sc., Bard College, USA, 1991
- D.Sc., University of Stellenbosch, South Africa, 1993
- D.Sc., Fairfield University, USA, 1993
- D.Sc., University of Cambridge, United Kingdom, 1993
- Dr.h.c., Charles University in Prague, Czech Republic, 1998
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