He entered the Pontifical Gregorian University in Rome in 1946 remaining there until 1949 where he obtained a doctorate in theology with the highest grades with his thesis on La santa Misa en la espiritualidad de San Ignacio de Loyola.
Ušao je u gregorijansko Papinsko sveučilištu u Rimu 1946. godine ostavši tamo do 1949. gdje je stekao doktorat iz teologije s najvišim ocjenama s disertacijom " La santa Misa en la espiritualidad de San Ignacio de Loyola."