That is not so, HD. The Orthodox doctrine is that the Son is not the source (cause) of the Spirit; also the Son is begotten; He does not "proceed" (the Greek word is mora akin to "well") from the Father. Big difference. The confusion is in the Latin word procedere which does not imply an origin. A perfect example how a bad translation can lead to catastrophic theological errors!
The monarchy of the Father is absolute: He is the only one who is neither begotten nor proceeds from anything; the only one Who IS without a cause.
But before you cry "Mormons" again, remember that the Son is eternally (without beginning) begotten and the Spirit (as regards His existence) eternally proceeds from the Father. The Father is the cause of everything and all, including the divinity.
But before you cry "Mormons" again...
I have not yet got an answer to my question as to what God we will be like; Father, Son, Spirit, or something else. I think that is a very important point given the fillique, don't you?