Reverend Father Hans Küng (born March 19, 1928, in Sursee, Canton of Lucerne), is a Swiss Catholic priest, controversial theologian, and prolific author. Since 1995 he has been President of the Foundation for a Global Ethic (Stiftung Weltethos). Küng is "a Catholic priest in good standing", but the Vatican has rescinded his authority to teach Catholic theology. Though he had to leave the Catholic faculty, he remained at the University of Tübingen as a professor of Ecumenical Theology, serving as Emeritus Professor since 1996. In spite of not being allowed to teach Catholic theology, neither his bishop nor the Holy See has revoked his priestly faculties.

http://en.wikipedia.org/wiki/Hans_K%C3%BCng