Hans Küng was born on March 19, 1928, in Sursee, Switzerland. After graduating from the state gymnasium in Lucerne, he attended the Pontifical German College and the Gregorian University in Rome. He was ordained a Roman Catholic priest in 1954 and continued his studies in theology at the Institut Catholique at the Sorbonne in Paris. In 1960 he was appointed Professor of Fundamental Theology at the University of Tübingen in Germany. In 1962 he was appointed by Pope John XXIII an official theologian (peritus) at the Second Vatican Council. Following the Council, he continued to teach at Tübingen.