He is always unbounded, because nothing is greater than He; always eternal, because nothing is more ancient than He. For that which is without beginning can be preceded by none, in that He has no time. He is on that account immortal, that He does not come to an end by any ending of His completeness. And since everything that is without beginning is without law, He excludes the mode of time by feeling Himself debtor to none. Concerning Him, therefore, and concerning those things which are of Himself, and are in Him, neither can the mind of man worthily conceive what they are, how great they are, and what they are like; nor does the eloquence of human discourse set forth a power that approaches the level of His majesty. For to conceive and to speak of His majesty, as well all eloquence is with reason mute, as all mind poor. For He is greater than mind itself; nor can it be conceived how great He is, seeing that, if He could be conceived, He would be smaller than the human mind wherein He could be conceived. He is greater, moreover, than all discourse, nor can He be declared; for if He could be declared, He would be less than human discourse, whereby being declared, He can both be encompassed and contained. For whatever could be thought concerning Him must be less than Himself; and whatever could be declared must be less than He, when compared in respect of Himself. Moreover, we can in some degree be conscious of Him in silence, but we cannot in discourse unfold Him as He is. For should you call Him Light, you would be speaking of His creature rather than of Himself — you would not declare Him; or should you call Him Strength, you would rather be speaking of and bringing out His power than speaking of Himself; or should you call Him Majesty, you would rather be describing His honor than Himself.
Whatever in any respect you might declare of Him, you would rather be unfolding some condition and power of His than Himself. For what can you fittingly either say or think concerning Him who is greater than all discourses and thoughts? Except that in one manner — and how can we do this? how can we by possibility conceive how we may grasp these very things? — we shall mentally grasp what God is, if we shall consider that He is that which cannot be understood either in quality or quantity, nor, indeed, can come even into the thought itself. For if the keenness of our eyes grows dull on looking at the sun, so that the gaze, overcome by the brightness of the rays that meet it, cannot look upon the orb itself, the keenness of our mental perception suffers the same thing in all our thinking about God, and in proportion as we give our endeavors more directly to consider God, so much the more the mind itself is blinded by the light of its own thought. For — to repeat once more — what can you worthily say of Him, who is loftier than all sublimity, and higher than all height, and deeper than all depth, and clearer than all light, and brighter than all brightness, more brilliant than all splendor, stronger than all strength, more powerful than all power, and more mighty than all might, and greater than all majesty, and more potent than all potency, and richer than all riches, more wise than all wisdom, and more benignant than all kindness, better than all goodness, juster than all justice, more merciful than all clemency? For all kinds of virtues must needs be less than Himself, who is both God and Parent of all virtues, so that it may truly be said that God is that which is such that nothing can be compared to Him. For He is above all that can be said.
Treatise On the Trinity, 2