Arthur Cushman McGiffert, Albert Hauck, and Walter Alison Phillips, 1911 Encyclopædia Britannica, Volume 6… (1911)
“ At the council of Nicaea, and at the ecumenical councils which followed, the idea of an infallible episcopate giving authoritative and permanent utterance to apostolic and therefore divine truth, found clear expression, and has been handed down as a part of the faith of the Catholic Church both East and West. The infallibility of the episcopate guarantees the infallibility of a general council in which not the laity and not the clergy in general, but the bishops as successors of the apostles, speak officially and collectively. ”
