The Book of Five Rings is one of the most insightful texts on the subtle arts of confrontation and victory to emerge from Asian culture. Written not only for martial artists but for anyone who wants to apply the timeless principles of this text to their life, the book analyzes the process of struggle and mastery over conflict that underlies every level of human interaction.

The Book of Five Rings was composed in 1643 by the famed duelist and undefeated samurai Miyamoto Musashi. 

Reading Musashi is a right of passage. The man was a complete badass, on a level many of us will only ever dream of.    I'd say what you get out of the book is entirely subjective. It's been said that this is the Japanese version of Sun Tzu's "The Art of War." All Japanese executives have read it. Martial arts masters have read it. Historical scholars and enthusiasts as well. If you have the ability to take 18th century martial arts tactics and apply it to modern day situations, you could gain a great deal from this book.