This study clarifies the management philosophy(manager’s philosophy)of Kaichi Kawakami, former president of Nippon Gakki Co. Ltd., and examines its source, content, and impact. Upon graduating from university, Kaichi Kawakami presented a management philosophy called the “Six Commandments.” The source of these commandments were Christian teachings(religious background), a patriotic desire to contribute to the nation (economics/management thought), and his experiences up to that point. After World War II, Kawakami authored a book, Business and Management. Not only did the management philosophy in this book become the basis of “corporate philosophy,” but also influenced managers across Japan, through its “philosophy of service.” Traditional economic/management thought had centered on the nation; however, perhaps for the first time, the phrase “management philosophy” shifted this focus to the manager.