That it was not in the creed doesn’t mean it isn’t true.
This sort of argument admits many innovations. The Creed is perfect as it is because of the clarity of its positions. If you start introducing other things to it just because you can argue using sophistry that they’re true, then it makes the Creed into something other than what it was originally intended to be: A concise, easy to understand statement of the basic beliefs that are the foundation of the Orthodox Catholic faith. It is best to leave it alone, for this reason.
I was referring to his eternal procession. Actually, Dulles argues (correctly, I believe) that the immanent Trinity and the economic Trinity are the same, i.e. that Jesus sending the Spirit reveals the mystery of the Son (with the Father) eternally breathing forth the Spirit. The mission reveals the eternal procession, the procession manifests itself in the mission. There can be no division between the God of salvation and the transcendent, triune life of God.
This does not address what I wrote at all. I pointed out that the eternal procession of the Holy Spirit from the Father alone is not the same as the sending of the Holy Spirit into the world (one deals with His origin; the other with His mission), not that there is any kind of division between “the God of salvation and the transcendent, triune life of God”, whatever that means. It’s still the same God, the question is: Are we talking about origins, or temporal ‘sending’? The Creed talks about the origin of the Holy Spirit, not temporal procession. This is why it says “Proceeds from the Father” and not “Proceeds from the Father through the Son” in the first place.
For Dulles (and I agree), the innovation is not thefilioque, but the monopatrism of Photios.
This is absolutely irrelevant to any point I would make. Orientals are not Byzantines, Photios is too late for us, and we still do not agree with the Filioque.
The very common eastern patristic formula ‘from the Father through the Son’ aligns very well with the filioque
Again, not according to your Council of Florence (excuse me, it wasn’t Trent as I mistakenly wrote earlier), it doesn’t, because the definition given there talks about eternal procession, while the one above refers to temporal procession. They’re not the same thing.
unless one wants to develop a category of ‘eternal manifestation’. I take this ‘eternal manifestation’ to be a later development.
I do not know what you are talking about here.
I don’t disagree with anything in this statement, and I’m a convinced filioquist.
Then either you don’t understand the statement, or you don’t understand the Filioque as it has been defined by your own Church. From the Council of Florence:
*“We define that this truth of Faith be believed and accepted by all Christians, and that all likewise profess that the Holy Spirit is eternally from the Father and the Son and has His essence and His subsistent being both from the Father and the Son, and proceeds from both eternally as from one principle and one spiration” *
We do not believe that He has “His essence and His subsistent being both from the Father and the Son” (how could this be when all three are of the same essence?), nor that He “proceeds from both eternally”. These are both wrong ideas.