In the second precept of the ken-po goku-i the I Ching provides more on the reference to the "moon."
Harry Frankfurt wrote, "Becoming wholehearted, a state not unlike stoic resoluteness." It is to eliminate conflicts in which one physical process interferes with others and undermines equilibrium in which health consists." - The Stoic Warrior author.
Wholehearted is to seek to overcome or to supersede a condition of inner division and make the self into an integrated whole. Fight it as an enemy, banish it, resist all alliances with it. Build gates to keep from entering.
The depth and breadth Bushi Tatsuo Sensei went to achieve this level of enlightenment is astonishing or if you are of this mind then maybe he was just lucky and these connections are just the stories we tell ourselves to make what sometimes is a mundane practice into something much more much like those who "see" secrets in practice.
Look within, see the truth, stop the stories and allow Tao to provide for us. Seek knowledge, true and accurate knowledge, or only the facts.