A unique work on the underlying ontology, cosmology, and moral philosophy of the Yijing.In The Primary Way, the distinguished scholar of Chinese philosophy Chung-ying Cheng synthesizes his lifetime of work on the Yijing, also known as the I Ching or Book of Changes. Cheng offers a systematic engagement with the classic Chinese text as a philosophy that is still valuable and relevant today. In contemporary philosophical terms, Cheng has developed the ontological hermeneutics of the Yijing as well as its philosophical methodology of symbolic reference in a holistic and onto-generative system of trigrams and hexagrams. The book is organized around eight themes that illuminate Cheng's interpretation of the Yijing as a philosophy for creative human action and transformation. He demonstrates how the philosophy of change in the Yijing embodies early Chinese ontology, cosmology, epistemology, and virtue ethics in the interpretation of divinatory judgments. Cheng's work shows how the philosophy of change contains a vision of humanity as creatively related to heaven and earth, and how it gives positive meaning to any change as part of a ceaseless creativity. With this understanding, it enables humanity to develop its potential as a partner of heaven and earth.