The main source of Don Schminke's "Code of Leadership" on the nature of leadership is "Budosyoshinshu", written by Yuzan Daidoji (1636-1730). However, the author wittily extended the rules and principles discovered by Daidoji to a new facility - the "Samurai" of the 21st century - the heads of companies and firms. The book gives a variety of advice to young managers - from behavior in the family and team to meetings and negotiations at the highest level, called the necessary qualities of a manager for a successful career. The book contains applications that describe the application of the code in everyday life and indicate additional resources when studying the most important problems. The Codex is of undoubted interest to a wide range of readers as a kind of understanding of the cultural understanding of ancient Japanese civilization.