The only problem with the Catholic Catechism on that score is that the Orthodox East does not teach the procession of the Spirit “from the Father through the Son” as a doctrine and the Catechism suggests that “from the Son” and “through the Son” are the same.
They’re not the same in terms of the dogmatic imperative of the former.
The CCC’s position on that is a Latin Catholic one which doesn’t really take into account the actual teaching of the East on this matter i.e. that it is entirely unnecessary, from the standpoint of the Christian East, to insist on “through the Son” in Triadology. That is something Eastern Catholics have done, but it is different from what the Orthodox East teaches.
Alex
Hypostasis = Person.
St. Gregory Palamas taught that generation and procession are
hypostatic properties of the Father alone so the Son does not share in the existential procession of origin of the Holy Spirit. Otherwise, the
hypostases of the Father and the Son would be one and the same
hypostasis. There is fear in Orthodoxy that Catholic dogma has gone astray on this point.
St. John of Damascus wrote (John of Damascus, An Exact Exposition of the Orthodox Faith, in Writings, Catholic University of America, Fathers of the Church, vol. 377, Washington D.C., 1958):
“Neither do we say that the Spirit is from (ek) the Son, but we call Him the Spirit of (de) the Son” [pg 141 B]
"He is the Spirit of the Son, not as being from Him but as proceeding through Him from the Father " … “for the Father alone is Cause (aition)” [pg 148 B]
From Council of Florence 1439:
Note: Latin subsistere,
to support
“…we declare that what the holy Doctors and Fathers say, namely, that the Holy Spirit proceeds from the Father through the Son, tends to this meaning, that by this it is signified that** the Son also is the cause, according to the Greeks, and according to the Latins, the principle of the subsistence of the Holy Spirit, as is the Father also.** And since all that the Father has, the Father Himself, in begetting, has given to His Only-Begotten Son,
with the exception of Fatherhood, the very fact that the Holy Spirit proceeds from the Son, the Son Himself has from the Father eternally, by Whom He was begotten also eternally.”
Nobody should be confused on the terminology and what are acceptable statements from the Orthodox and Catholic:
ekporev-: to come out
proinai, procedit: to proceed
pemps-: to send
Catholic
1 Ekporev-: Procession of the Spirit from the Father only (aiton, principle)
2 Procedit: Procession of the Spirit from the Father through the Son
3 Procedit: Procession of the Spirit from the Father and the Son
4 Procedit, pemps-: Mission of the Spirit from the Father through the Son
5 Procedit, pemps-: Mission of the Spirit from the Father and the Son
No. 3 is considered to be a derivation by some Orthodox; unacceptable unless “and” means “through”.
Orthodox
1 Ekporev-: Procession of the Spirit from the Father only (aition, principle)
2 Proinai: Procession of the Spirit from the Father through the Son
3 -----
4 Proinai, pemps-: Mission of the Spirit from the Father through the Son
5 Proinai, pemps-: Mission of the Spirit from the Father and the Son
The Catholic Catechism does recognize that the meaning can be mangled with rigidity, implying that the expressions are not always equivalent:
“This legitimate complementarity, provided it does not become rigid, does not affect the identity of faith in the reality of the same mystery confessed.”
Metropolitan John Zizioulas said:
The “golden rule” must be Saint Maximos the Confessor’s explanation concerning Western pneumatology: by professing the filioque our Western brethren do not wish to introduce another αἴτον [aiton] in God’s being except the Father, and a mediating role of the Son in the origination of the Spirit is not to be limited to the divine Economy, but relates also to the divine οὐσία [ousia]. If East and West can repeat these two points
together in our time, this would provide sufficient basis for a rapprochement between the two traditions.
– Being as Communion, p 54.
Note: ousia = being.