In ancient China, wars left millions dead and the leaders in search of a new way of governing. In the Art of War, Sun Tzu recommended a strategic method to win that rarely required actual war. Spies, diplomats, deception, and a well organised internal structure were his main tools. If it came to war though, he had detailed insight into its methods and strategies.

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About this site

The web site introduces the Sun Tzu's Art of War and Musashi's Book of Five Rings.  I have written some software to help implement its ideas and translated some sections of the texts.  My commentaries are aimed at people that want to implement the ideas but have only a casual interest in ancient Chinese language and culture.  My perspective is based on my martial arts and management experience as well as my time living in Japan and Taiwan. 

I hope this site will help companies and people achieve their goals more quickly and efficiently without the need of arguments or destructive conflict.  If you can do this, you have truly mastered Sun Tzu's technique.

If you want to cite this site, please include Robert Friedler and in there somewhere.  If you want to use my software or photos on another website or reproduce them, contact me first at   Feedback is welcome at    You may write in Chinese or Japanese if that is your preferred language.