“There are those who, under the pretext of a greater fidelity to the Church and the Magisterium, systematically refuse the teaching of the Council itself, its application and the reforms that stem from it, its gradual application by the Apostolic See and the Episcopal Conferences, under Our authority, willed by Christ. They discredit the authority of the Church in the name of a Tradition, of which respect is attested only materially and verbally; the faithful distance themselves from the bonds of obedience to the See of Peter as well as to their legitimate Bishops; today’s authority is rejected in the name of yesterday’s.

(…)

It is even affirmed that the Second Vatican Council is not binding; that the faith would be in danger also because of the post-conciliar reforms and guidelines, which there is a duty to disobey to preserve certain traditions. What traditions? Does it belong to this group, and not the Pope, not the Episcopal College, not an Ecumenical Council, to establish which of the countless traditions must be regarded as the norm of faith!”

(scroll down for answer)

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Pope St. Paul VI

Speech at a Consistory for the nomination of new Cardinals

May 24th, 1976

(translation from here)