Pseudo-Dionysius the Areopagite

“ For, not only is Almighty God superfull of wisdom, and of His understanding there is no number, but He is fixed above all reason and mind and wisdom. And, when the truly divine man, the common sun of us, and of our leader, had thought this out, in a sense above nature, he says, "the foolishness of God is wiser than men," (meaning) not only that all human intelligence is a sort of error, when tried by the stability and durability of the Divine and most perfect conceptions, but that it is even usual with the theologians to deny, with respect to God, things of privation, in an opposite sense. ”

“ For, not as learning existing things from existing things, does the Divine Mind know, but from Itself, and in Itself, as Cause, it pre-holds and pre-comprehends the notion and knowledge, and essence of all things; not approaching each several thing according to its kind, but knowing and containing all things, within one grasp of the Cause; just as the light, as cause, presupposes in itself the notion of darkness, not knowing the darkness otherwise than from the light. ”

“ So the Divine Mind comprehends all things, by His knowledge surpassing all, having anticipated within Himself the knowledge of all, as beseems the Cause of all; before angels came to being, knowing and producing angels ”

“ But, even as regards the sensible perceptions themselves, one would not miss the mark, if one called them an echo of wisdom. Yet, even the mind of demons, qua mind, is from It; but so far as a mind is irrational, not knowing, and not wishing to attain what it aspires to, we must call it more properly a declension from wisdom. ”

“ Almighty God, then, has not one knowledge, that of Himself, peculiar to Himself, and another, which embraces in common all things existing; for the very Cause of all things, by knowing Itself, will hardly, I presume, be ignorant of the things from Itself, and of which It is Cause. ”

“ But, as I have been accustomed to say many times before, we must contemplate things Divine, in a manner becoming God. For the mindless, and the insensible, we must attribute to God, by excess----not by defect, just as we attribute the irrational to Him Who is above reason ”

“ The Divine Wisdom then, by knowing Itself, will know all things; things material, immaterially, and things divisible, indivisibly, and things many, uniformly; both knowing and producing all. things by Itself, the One. For even, if as becomes one Cause, Almighty God distributes being to all things that be, as beseems the self-same, unique Cause, He will know all things, as being from Himself, and pre-established in Himself, and not from things that be will He receive the knowledge of them ”

“ In this way then, Almighty God knows existing things, not by a knowledge of things existing, but by that of Himself. For the Oracles affirm, that the angels also know things on the earth, not as knowing them by sensible perceptions, although objects of sensible perception, but by a proper power and nature of the Godlike Mind. ”

“ And souls have their reasoning power, investigating the truth of things by detailed steps and rotation, and through their divided and manifold variety falling short of the single minds, but, by the collection of many towards the One, deemed worthy, even of conceptions equal to the angels, so far as is proper and attainable to souls. ”

“ Section III In addition to these things, we must examine how we know God, Who is neither an object of intellectual nor of sensible perception, nor is absolutely anything of things existing. Never, then, is it true to say, that we know God ”