God then is called Mind and Reason and Spirit and Wisdom and Power, as the cause of these, and as immaterial, and maker of all, and omnipotent Dionys., De div. nom., c. 5.. And these names are common to the whole Godhead, whether affirmative or negative. And they are also used of each of the subsistences of the Holy Trinity in the very same and identical way and with their full significance Text, ἀπαραλείπτως: variant, ἀπαραλλάκτως, unchangeably, an adverb used by the Greeks in connection with the equality of the divine persons.. For when I think of one of the subsistences, I recognise it to be perfect God and perfect essence: but when I combine and reckon the three together, I know one perfect God. For the Godhead is not compound but in three perfect subsistences, one perfect indivisible and uncompound God. And when I think of the relation of the three subsistences to each other, I perceive that the Father is super-essential Sun, source of goodness, fathomless sea of essence, reason, wisdom, power, light, divinity: the generating and productive source of good hidden in it. He Himself then is mind, the depth of reason, begetter of the Word, and through the Word the Producer προβολεύς, Lat. productor, Emitter. of the revealing Spirit. And to put it shortly, the Father has no reason Or, Word; λόγος., wisdom, power, will θέλησις, cf. Cyril, Th., assert. 7; Athan., Contr. Arian. 4; Greg. Nyss., Contr. Eunom., p. 345., save the Son Who is the only power of the Father, the immediate ἡ μονὴ δύναμις του Πατρὸς, ἠ προκαταρτικὴ τῆς τῶν πάντων ποιήσεως. The ἡ προκαταρτική is understood by some to mean the primordial or immediate Cause, by others to be better rendered as the primordial Power or Energy. Basil in his De Spiritu Sancto speaks of the Father as the primordial Cause (προκαταρτικὴ αἰτία) in the creation of the world. cause of the creation of the universe: as perfect subsistence begotten of perfect subsistence in a manner known to Himself, Who is and is named the Son. And the Holy Spirit is the power of the Father revealing the hidden mysteries of His Divinity, proceeding from the Father through the Son in a manner known to Himself, but different from that of generation. Wherefore the Holy Spirit is the perfecter of the creation of the universe. All the terms, then, that are appropriate to the Father, as cause, source, begetter, are to be ascribed to the Father alone: while those that are appropriate to the caused, begotten Son, Word, immediate power, will, wisdom, are to be ascribed to the Son: and those that are appropriate to the caused, processional, manifesting, perfecting power, are to be ascribed to the Holy Spirit. The Father is the source and cause of the Son and the Holy Spirit: Father of the Son alone and producer of the Holy Spirit. The Son is Son, Word, Wisdom, Power, Image, Effulgence, Impress of the Father and derived from the Father. But the Holy Spirit is not the Son of the Father but the Spirit of the Father as proceeding from the Father. For there is no impulse without Spirit. And we speak also of the Spirit of the Son, not as through proceeding from Him, but as proceeding through Him from the Father. For the Father alone is cause.