Kashima-shinden Jikishin Kage-ryu

Hold swords on both sides and use the sword to fight. Between them, the two standing, is the place where chaos was not divided before the heaven and earth were opened. Before the heaven and earth were opened, there was chaos and no separation. The shape is the same as the Taiji cloud, the Wuji cloud. The cloud is the cloud of the infinite. The cloud is the cloud of no self. If you dare to go to a place where there is nothing, you will be able to take it, and you will be able to wield the sword.

hojo densho from Yamada Jirokichi, 1927.

The art of war prohibits violence, eliminates chaos, calms the people and defends the country. It is also the way to create virtue and ward off evil spirits. It is a precious weapon for protecting the body. The sword is used to remove limitations. In its use, reason is not the decisive factor. If you practice and act carefully, you will be able to penetrate your original nature. That is the origin of the flowing spirit sword. Otherwise, it will be difficult to be wise and courageous, and practice will not yield benefit.

reikenden densho from Yamada Jirokichi, 1927.