For the Brother that was wondering why I offered Elements for moral study, the idea is not new. First, in order to study the sacred aspects of Geometry, we must study the "number."
Second, it was believed by many traditional schools that Elements teaches and conditions the mind towards precise logical thinking. It was once said, "that being steeped, day in and day out, in the rigorous and precise demonstrative character of Euclid’s proofs accustoms the mind to employ such rigor in formulating its own thoughts, and, on the other hand, to recognize the gaps in less sound arguments it may encounter."
It is also believed that the study of the forms manifest the moral habit of the mind’s general orientation towards the truth.
The idea of the axiom was believe to apply to all and every aspect of the Universe to include the spiritual. In other words, we could not, in our spiritual lives, escape the Divine Principle. So we must always work from the axiom outward to arrive at a moral conclusion.
I hope that helps. My recommendation remains that all books deserve study and meditation...and a pen a paper. Studying geometry without studying number is like trying to pray without thinking about God.