Bulgakov on the Filioque

[Michael]

“from the Son” and “through the Son” are theological opinions which were dogmatized prematurely and erroneously. There is no dogma of the relation of the Holy Spirit to the Son and therefore particular opinions on this subject are not heresies but merely dogmatic hypotheses, which have been transformed into heresies by the schismatic spirit that has established itself in the Church and that eagerly exploits all sorts of liturgical and even cultural differences" (emphasis in the original).

Sergei Nikolaevich Bulgakov, The Comforter (Wm. B. Eerdmans 2004 ISBN 0-8028-2112-X), p. 148

The Spirit is the unifying love between Father and Son, as Augustine affirmed. The Father is therefore defined by generation and spiration, Son and Spirit; the Son is defined by the engendering of the Father and the reposing and passing through of the Spirit; and the Spirit is defined by the procession from the Father and the presence of the Son for whom the Spirit is a “transparent medium” (67; cf. 70). The Spirit proceeds from the Father “toward the Son, upon the Son, in relation to the Son,” but also “from the Son, through the Son toward the Father” (181).

fireandrose.blogspot.com/2008/10 … pirit.html