Lecture I
[^6]: Filioque controversy. Filioque (“and the Son”) was an addition by the Western Church to the Constantinopolitan Creed, namely, that the Holy Ghost proceeds from the Father and the Son (called the double Procession of the Holy Ghost). This was the origin of the Greek schism and the chief ground of attack upon the Church of Rome by the Orthodox Church, which follows the Byzantine rite. Photius refused to accept the insertion of filioque in the Nicene Creed and the Photian schism finally triumphed in the Orthodox Church. The addition of filioque was first met with at the third Council of Toledo 589, and was defended by Patriarch Paulinus at the Synod of Friuli 796. When introduced into the monastery at Jerusalem by Frankish monks in 847 it met with immediate opposition from Eastern monks. It was adopted at Rome after A.D. 1000 and declared to be a dogma of faith in the fourth Lateran Council 1215.