In the past, extremely influential Eastern theologians (Photius the Great, Mark of Ephesus, etc.) have rejected the Filioque on important theological grounds. Likewise, the Latin Catholic church ...
In order to contextualize the question I add the following quote from the wikipedia article concerning Filioque clause: Filioque, Latin for "and (from) the Son", is a phrase found in the form of ...
Depending on your tradition, the Nicene Creed may or may not say that the Holy Spirit proceeds from the Son as well as from the Father: (Greek) τὸ ἐκ τοῦ πατρὸς ἐκπορευόμενον - who from the Father ...