What the heck is “The Book of 5 Rings?”

It’s a military strategy book, written in 1643 by a samurai named Miyamoto Musashi. It is said that Miyamoto-san never had a home, never bathed, never had any children, or women. On a side note, I can’t imagine why he never married, but I digress . . . → Read More: 9 Rules from “The Book of 5 Rings”