"Finally, someone has interpreted this classic book specifically for the martial artist as it was originally intended." --Inside Kung-Fu
"...Kaufman does an excellent job of translating the text." --Dr. Henry Smith, Professor Emeritus, Dept. of East Asian Languages & Cultures, Columbia University
"There was a time when I was reading this book before all my major competition. It focused my mind on the conceptual behind skill development and application. If you have the ability to understand concepts and apply them to your interests, this book is for you." --BJJ Canvas
"Kaufman does a superb job of translating ancient Japanese to modern English while still maintaining the original mindset and teachings." --Shihan Dana Abbott
"Kaufman's interpretation is the only translation / interpretation that I have been able to use 'in the field' specifically to enhance the 'frame of mind' of the athletes I coach before the ultimate testing ground; competition." --Haydn Ellis, Sydney, Australia
"One of the most knowledgeable men I've ever spoken with. He's like a university professor with a New York edge." -- Master Mark Liverio, Founder of Willow-Oak Martial Arts, FL
"Kaufman Hanshi has gone beyond the simple idea of translating the books, and instead works as the interpreter, speaking specifically to the martial artists out there." --Martial Thoughts blog