Rethinking the Filioque with the Greek Fathers

Does the Holy Spirit proceed only from the Father—or also from the Son?     Protestants and Roman Catholics might immediately answer the latter and wonder why their Orthodox friends protest. Historically one of the major obstacles to Christian unity across the East-West divide, the  Filioque —the part of the Latin translation of the Nicene Creed claiming the Holy Spirit proceeds from the Father  and the Son —still bedevils Trinitarian theologians today.     How can