T. R. Valentine: The Filioque Page

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Filioque (2nd edition)

Filioque (3rd edition) — work in progress!!

A side-by-side comparison of the Symbol of Nicaea and the Symbol of Constantinople I

A side-by-side comparison of the Symbol of Nicaea-Constantinople (the Nicene Creed) and the Western form


Synod of Blachernae: The Tomos of 1285 — the only detailed synodal (conciliar) response of the Orthodox Church to the Filioque

The Synodikon on the Holy Spirit — Modelled on the Synodikon of Orthodoxy


Saint Photius the Great: Encyclical to the Eastern Patriarchs

Saint Photius the Great: The Epitomes of the Mystagogy of the Holy Spirit (A Summary of the Mystagogy)

Saint Photius the Great: Mystagogy of the Holy Spirit


Father George Dragas: The Eighth Ecumenical Council: Constantinople IV (879/880) and the Condemnation of the Filioque Addition and Doctrine

Father John Romanides: The Filioque

Dr. Father Michael Azkoul: The Filioque: Truth or Trivia?

Father Theodore Stylianopoulos: The Filioque: Dogma, Theologoumenon or Error?

Vladimir Lossky: The Procession of the Holy Spirit in Orthodox Trinitarian Doctrine



Metropolitan Ioannis (John) Zizioulas:: The Doctrine of the Holy Trinity: The Significance of the Cappadocian Contribution



The Vatican's Clarification on the Filioque

The Vatican Clarification on the Filioque with Commentary

The Vatican:The Greek and Latin Traditions Regarding the Procession of the Holy Spirit (aka Clarification on the Filioque) in image format from L'Osservatore Romano as published 20 September 1995, pp. 3, 6.

Metropolitan Ioannis (John) Zizioulas: One Single Source: An Orthodox Response to the Clarification on the Filioque



The North American Orthodox-Catholic Theological Consultation's Agreed Statement

The Filioque: A Church-Dividing Issue?

Commentary on the Agreed Statement, 'The Filioque: A Church-Dividing Issue'

Greek Orthodox Brotherhood of St. Poimen: On the Orthodox-Catholic Agreed Statement on Filioque(visit their home page)