- Dr. habil. (Business Ethics), University of St. Gallen, 1986.
- Dr. rer. pol. (Economics), University of Fribourg, 1982.
- Lic. rer. pol. (Economics), University of Fribourg, 1976.
- Lic. theol. (Theology), Faculté de Théologie, Lyon-Fourvière, 1973.
- Lic. phil. (Philosophy), Philosophische Hochschule, München/Pullach, 1967.
- Visiting scholar at Harvard University, Cambridge MA, with Prof. Amartya Sen, October 1990-April 1991.
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