Reddit mentions of Mystical Languages of Unsaying

Yeah, well, this is exactly the point where apophatic theology reaches the its culmination point. When saying "God is not a being", or "God is being itself", or "God is outside being" you could change being with language or concept: "God is not a word or a concept", "God is Nous", "God is beyond, God is beyond speech", etc. This is, of course, problematic. If you say "you cannot speak of God", you still refer to God with the word "God" and are effectively speaking about God. This is an interesting theological question. I've read quite a few books about it. One of the most interesting ones was Mystical Languages of Unsaying by Michael A. Sells. (For example, see page 2-3 for this same topic; at least my LookInside shows them!)

My own personal view on this is that a claim that "You cannot speak about God" or "God is outside reality" is not a claim on the superessential = outside-the-existence-being God, but a claim on the borders of language or reality. Saying this shorter: there is a border of reality and language and we can talk about and point to that border and use the term of otherness or beyond-the-border, but this is not a proper concept that would "reach" or "contain" that thing-which-is-not-a-thing-but-outside-thinginess, but simply saying that there is a border of our language.

Of course, classical philosophy (Neoplatonism, to be more exact) and Christian theology in quite a similar fashion claim that this thing-which-is-not-a-thing-but-outside-thinginess (this long phrase is usually simplified with the term super-thing) is the cause of world. Christians go further, still, and name this Cause to be God, and that this God has become man, and that this God is triune, etc.

These, of course, are things that according to this metaphysical ontology cannot be proven, as they are beyond the scope of language, logic and concepts.