The Council Fathers looked upon him with not a little suspicion.

During this period, which began on 14 September 1964, the Council Fathers worked through a large volume of proposals.

The first of the major considerations by the Council Fathers was given to the Liturgy and its music, as well as sacred art.

This led to developments in both music and the Liturgy which were probably more far-reaching than the Council Fathers anticipated.

He attended the Second Vatican Council's first session as a Council Father.

He served as a Council Father in all four sessions of the Second Vatican Council from 1962 to 1965.

He believed that the Council Fathers needed to issue a stronger declaration against antisemitism as a "necessary act of a renewed Church".

He exhorted the Council Fathers "to use the medicine of mercy rather than the weapons of severity" in the documents they would produce.

Two-thousand nine-hundred and eight (2,908) men (referred to as Council Fathers) were entitled to seats at the council.

He was also a Council Father at four sessions of the Second Vatican Council.