ABSTRACT
For centuries, scholars of the Book of Changes have been focused on the metaphysics or the wisdom of how to comprehend the unchanging principle from changing phenomena. There is nothing wrong with such discussions, but this customary mode of thinking distracts us from appreciating the political wisdom of harmony. In fact, there is an abundant resource of thought in this topic to explore. This chapter focuses on the proposition “preserve great harmony in union, and the result is advantageous, correct, and firm” (保合太和，乃利贞), which the author believes captures the quintessence of the political philosophy in the Book of Changes. Its basic meaning is that only when a social and political environment of harmony and peace is created, can all benefits that human beings have attained be fair, valid, and sustainable. This is the most brilliant thought in the theory of great harmony in the Book of Changes.
