On 25 March 1977, Pope Paul VI named him Archbishop of Munich and Freising. On 28 May of the same year he received episcopal ordination. He was the first Diocesan priest for 80 years to take on the pastoral governance of the great Bavarian Archdiocese. He chose as his episcopal motto: "Cooperators of the truth". He himself explained why: "On the one hand I saw it as the relation between my previous task as professor and my new mission. In spite of different approaches, what was involved, and continued to be so, was following the truth and being at its service. On the other hand I chose that motto because in today’s world the theme of truth is omitted almost entirely, as something too great for man, and yet everything collapses if truth is missing".