I have read samurai, Miyamoto Musashi’s A Book of Five Rings (1645) many times over my life. It is one of the profound books that one can keep coming back to. The five rings, relates to the Way of strategy, not only for combat in a physical sense, but in life and politics, which is why this book, along with Sun Tze, The Art of War, are studied in commerce schools and business management, I suppose to get the young cubs interested in the history of business warfare, and the animal spirits of capitalism, flowing.
The five ways are each covered in a “book” which for us is a chapter: Ground, Water, Fire, Tradition/Wind and Void. Musashi’s own approach to sword fighting, and he went around Japan fighting duals to the death, is the Ichi Ryu Ni To School: One School-Two Swords. He is dead against fighting using only one sword, which is a symbol I suppose of not using one’s full potential. The Ground book gives the essence of his philosophy, which is about knowing the weakness of an enemy, timing, when to attack, and how to neutralise them: “If you master the principles of sword-fencing, when you freely beat one man, you beat any man in the world.” The sword is a metaphor for that which is of ultimate value, including life itself, a symbol of the spiritual essence of the warrior, not merely a piece of steel.