N.B.: This is the under-construction revised second edition of my July 2008 post: "Filioque: Fathers, Popes, & Councils." 1. The Eastern Orthodox differ from Catholics in that the former deny that the υπόστασις [hypostasis] of the Holy Spirit proceeds from the Son; at most, they will gr...

Latin from Patrologia Graeca 161 (some of the words are hard to read, so feel free to offer corrections; thanks and God bless you and yours!): Demonstrationes quod liceat verum Symbolo addere.Concilium, seu concilia, non solum aliam fidem proferre, verum etiam componere vetant. Jam vero, si intellig...