Gw mau tau Pawiyatan dari William Chang Ofm. Cap.. Jelasin dalam bahasa jawa

Sarjana Filsafat ing STFT St. Johannes (Pematang Siantar, Sumatra Lor), lulus taun 1988.

S2 bidang moral ing Universitas Gregorian (Roma, Italia), lulus taun 1993, kanthi tesis "Confucian Jen in the Analects and Jesus Commandment of Love According to John 13: 34-35, an Ethical Comparative Study".

S3 bidang moral ing Academica Alfonsiana Institute Superiore ing Theology Moral University of Lateran Rome, lulus taun 1996, kanthi disertasi "The Dignity of the Human Person in Pancasila and the Church Social Doctrine, an Ethical Comparative Study", sing mangké dibabaraké Claratian Publication, Quezon City (1998).