@Shlomo,
One of my favorite themes is the impossibility of closure. Philosophy as criticism is never finished, for it must criticize itself, and criticize this criticism of itself, and so on --
forever.
Which is to say that I agree that rationalization, no matter how sophisticated, will never attain the "truth" or the "One." I also don't think man is primarily a rational animal. He's inventive and lingual, but I question the will-to-truth. He needs truth in a practical sense and something else in a spiritual emotional sense -- which is sometimes also called truth.
Nicholas of Cusa compared man's knowledge of God to a polygon inscribed in a circle. No matter how many sides its has, it is not congruent. ("The Way that can be told is not the true way." I think we can still get some mileage out of the word "God," but only among those without knee-jerk reactions to the term. One could just as well use the "Absolute" or "Ultimate Reality" or the "One."
C.G. Jung strongly influenced my mental-model of the human psyche.
I use words like "intuition" or "feeling" for my response to the mystical-religious traditions I value, knowing that words can only do so much.
Somehow this attitude reminds me of Kant 2.0 (Now with 666% more Nietzsche) --- I want to call out the implicit pseudo-religion of those who make an idol of logic. I want to clear a path for the appreciation of myth both religious and metaphysical.