A Geometric Intelligible Objectivity of the "inner functioning mind" is the practical objective basis for the proportional travel time for light.  As travel across a geometric circle is proportional, the speed is unquantifiable (see the transcendental nature of Pi) so the Universal rate light travels is actually a stipulated absolute for a Universally, agreed upon measure, although not completely true and accurate, opening the door for Quantum effects and the mechanics of those efffects.

Physically, the Universe Remains Unique.  By all observation: The Universe IS Unique, and Remains Unique, Always and Everywhere; and, therefore "Relatively" the Universe Appears to be in Motion.

Consequently, Each and Every Clock in the Universe is Unique so the Travel Time of Light cannot be measured by the Unique Speed of a Unique Clock meaning the Universal speed of light as in Einstein's Relativity must be STIPULATED and cannot be absolutely measured.

In the concluding sentence of, The God-Symbol: Its History and Its Significance, author, Paul Diel, states:
       "The analysis of the "Divinity" image [i.e., a mandala] is nothing but the analysis of the inner psychic functioning that created the "Divinity" symbol." *****

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       In other words, the "Divinity" symbol is merely a subjective symbol that Diel claims can be analyzed. 
       However, where what is referred to by Diel as a "Divinity" symbol is geometric, an objective symbol, "the analysis of the inner psychic functioning that created the "Divinity" symbol"* must reasonably consider, after study, the order and history of geometry and sacred geometric forms such as, The Star of David, and The  Seal of Solomon, and, The Circle, The Cross, The Cross Piece, The Cross Section, The Square, and The Trinitarian Triangle, all  examples of historic symbols and sacred geometric forms.*
       With Geometry: There is revealed or discovered truth, proof in minds of a sacred geometric traditional form, principle, basis and order, as "pointed to" or explained by actual, historic, ancient geometry.

"[A} geometric figure of the Universe", after decades of study, was drawn without knowledge of a mandala ("a geometric figure of the Universe"). The drawn geometric diagram of the Universe understandably ended up being treated, seen and viewed, as a mandala because the geometric figure drawn is a mandala or mandala like (i.e., what was called or described as a Rose window .
      Crucial in drawing, constructing a  geometric (objective) figure of the Universe, a symbol, a diagram of the Universe (seen and viewed as a mandala) is  the classical physical manifestation of a  stable ordered Universal geometric form, a Principle symbol, and a Non-Obvious step, for a belief foundation, a basis for thought and belief, an objective basis, held  to be "perfectly" correct by proportion.  

truth:  A real Universe form, a foundation in physics and belief:  see in proportion, a star, a circle, a cross,  a center-point, (a point, right on the line), four right angles, as a physical diagram of the Universe.  A drawn real Universe diagram, seen and treated as a mandala and compared to a real Rose window.

      Non-Obvious here means "something" obvious (i.e., a step discovered and proved necessary essential to a process) "something" that is obvious to, at least, a perspective (two or a few people) and yet, not yet seen, found or learned as obvious by all (or many).  As to Non-Obvious, where "something" is determined to be Non-Obvious, that "something", ultimately, is, obvious to at least two people, and that "something" goes undetected or unseen, unnoticed, by others.*

Ultimately, this work is not about an image but a symbol, a symbol pointing to something beyond or other than the symbol itself.  As Diel stated in the "God Symbol"  "The Divinity symbol is nothing but, the analysis of the inner psychic functioning that created the "Divinity" symbol."  However, when a diagram of the Universe is not drawn as a "Divinity" symbol, yet the diagram is treated and seen as a mandala, a "Divinity symbol" , and when that diagram, mandala is formed from sacred geometric forms, analysis must go beyond the inner psychic functioning of the person who created the "Divinity" symbol to the geometry and the meaning of the geometric forms. Crucial in all this is understanding the Divinity symbol references. ... AS THIS IS AN O.
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A Divinity symbol does have historical significance.