St. Mark's Argument, against the Filioque paragraph one

The Holy Spirit proceeds from the Father and the Son, as though He proceeds as from  two  Hypostases, 

or as from their common nature, or as from  an originating  power.

But if He proceeds as if from  two  Hypostases, then two principles are put forth ; both two causes of the Holy Trinity and two originators, and so the Monarchy is denied. 

But the Father is the only Fount of the supersubstantial Divinity. 

But if He proceeds as from their common nature, in the first place,  it was never before or now heard that there is another (than the Father tr.) hypostasis which generates, instead it says they “are not from themselves.” And again, reasoning this way they will come to this conclusion.  For the hypostasis  is nothing other than the nature with the particular  properties, so that it is logically necessary to be  from a particular nature or natures  in order to be  from a hypostasis or hypostases. In respect to being from the Divine nature, it is the same as generation. For were the Holy Spirit also originating another than Himself,  then it would be a partaker of the same nature.