Principles of Shooting by Master Junsei Yoshimi
The way is not with the bow, but with the bone, which is of the greatest importance in shooting.
Placing Spirit (Kokoro) in the center of the whole body, with two-thirds of the Yunde (left arm) push the string, and with one-third of the Mete (right arm) pull the bow. Spirit settled, this becomes harmonious unity.
From the center line of the chest, divide the left and right equally into release.
It is written, that the collision of iron and stone will release sudden sparks; and thus there is the golden body, shining white, and the half moon positioned in the west.
Sha Soku Seikatsu ... Kyudo is Living