In this book, Koo discusses political change in the view of Confucian thought. This study focuses on the Book of Change, which is one of the nine basic books of Confucius School; it has dominated oriental thought in this field for more than three thousand years. The aim of this study is to analyze and arrange its theory of change, and to apply it to political reality. Therefore, this book analyzes and summarizes the theories of change and applies those theories to political change. From that process, the theories of political changes are developed. Their usefulness is tested in the real world and compared to the existing theories of political change. The result is to develop and present a new theory of political change.