But the study of the unknowable is pointless as an endevor unto itself.
'The Unknowable' is a predigested supposition.
There are words like 'apperception', whose near-synonyms describe possible means of transcending learned habits of not Seeing very much around us. But only experiment ever takes these beyond mere word games, natch. (Still, poetry has a better chance than prose, in such matters.)
Summing up for the precious few who have gone before, rather than accepting that the Sound Barrier cannot be broken -
Always choose the difficult.-- Rainer Maria Rilke
A Glimpse.. will tantalize -
Two Glimpses? usually galvanize.
YMMV