R. Buckminster Fuller, in a book called Intuitions (Doubleday, N.Y. 1976) writes about mystery:


...and the black void


mysteriousness of night


backdropping the fireworks


is the omnipresent, a priori mystery.


And the real beginning of education


Must be the experimental realization


of absolute mystery...


The context of this poem is that he is referring to the way that education tends to focus on the parts without seeing either the whole or the background of silent universal mysteriousness upon which all phenomena are projected. That silent background is the unified field; the field that connects us all together and is the basis for a culture's integrity and strength.