ISBN-13: 9781500548339 / Angielski / Miękka / 2014 / 54 str.
The book is an attempt to distill the essence of teaching of Tae Kwon Do as the Art of harmony of mind and body in less than thousand words and twenty principles. None of the principles in this book has been taught inaformal way - they cannot be taught. They revealed themselves through the constant practice. They came from casual conversations and loosely structured commentsas brief and elusive as sparks from a flint edge."