The nature of reality is will. The very essence of creation is an act of will and each and every convultion of emanation is also a subsequent expression of that will. This supercedes any physics. the k&c of hga is the step one takes to realize contact with the will of the universe which is what all is. once one is in touch, as it were, with this great expansive will one sees what one must do(ones true will) this is done forth with as a person thus seeing their true will is at this point of the mind to achieve it. This dynamic is the nature of the universe. the nature of reality. In other words the scientist who does not work with the concept of supernal will (that which causeth kether to concentrate) is working with lower seferah ie lower yetzeratic and Assiac. And though the discoveries of Einstien etal. seam sublime they are not as true as the statement that 'will is the nature of the universe'. Also the discovery of that will and the method to do this constitute the most important activity and the most stupendous goal. The Theories of science in the vien of logical positivism and empirisism are doomed to be but the constructors of crude assiac tools and manipulations which pale in comparison to the subtle spiritual devices and understandings of the higher aspects of the tree which are handed down and also discovered through the methods of adepts.
When it was asked what is the nature of the universe i wonder if it was meant 'from a perspective of modern scientific thought' or wasit meant the 'perspective of scientific illuminism'. the latter has a valuable answer but the former is limited in scope and grasp. empirical science has its place but until it changes its tune that place is in hod and yesod mostly in the assiac and lower yetzeratic.
some would say love is the nature of the universe and at least there they are in the right ballpark. However quarks, muons, gluons, hadrons, string theory... are all side notes to be left behind as one ascends the tree.
that is not to say you can't use the discoveries, ideas and language of the empirical sciences to springboard ideas and abate the doubtful nature of the mind (thru using the scientific description of odd occult ideas) as it passes the lower grades. eventually the study of what stuff is is subsumed into more sublte realization and such things are no longer of value.
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