correlative cosmology of the Yijing

The correlative cosmology of the Yijing is the Great Treatise’s account of a correspondence between the changing lines of the hexagrams and the changing phenomena of Heaven and Earth. It makes the figures more than a store of divinatory signs: they are presented as a way of representing the course of the world. The translator accepts the Treatise’s claim that figures and phenomena move in accord, but draws a firm boundary around what that claim means, resisting the later interpretation that turns it into a theory of primordial matter or creation.

The principle of correspondence

The Treatise gives change a double scope. It names both the Yijing as a book and a system of transformations operating through its figures. Its definition, “Production and reproduction is what is called (the process of) change,” describes a world in which one thing gives way to another: when something is displaced, what displaces it takes its place. The same pattern appears within the hexagrams, where strong and weak lines push one another out. Change is therefore not an ornamental metaphor applied to the figures; it is the shared process that links their internal movement to change beyond them.

The Treatise states the correspondence directly: “The Yî was made on a principle of accordance with heaven and earth, and shows us therefore, without rent or confusion, the course (of things) in heaven and earth.” In this account, the figures disclose a pattern rather than merely forecasting isolated outcomes. The translator emphasizes the Treatise’s assertion that change in the lines and change in external phenomena show a remarkable harmony and concurrence. The hexagram system can represent the world because its own alternations are understood to accord with the world’s transformations.

Figures, interpretation, and divination

The claim depends on figures whose meanings are interpreted at more than one level. The Yijing’s Text consists of sixty-four short, symbolically expressed essays on themes that are mostly moral, social, and political, each based on a six-line figure. King Wen interprets each hexagram as a whole, indicating its significance and, in some cases, what action its circumstances call for and whether that action is fortunate. The Duke of Zhou then interprets the six lines individually, beginning at the bottom, through symbolic illustrations that likewise address the fortune of action. In the translator’s account, the whole-hexagram interpretation is in harmony with the combined significance of the six line interpretations.

That interpretive structure also makes the correspondence practical. Line positions and the qualities of the lines affect how an image is read; the significance of a line varies according to the hexagram’s name and the condition it denotes. The translator cautions that the figures’ symbolic significance does not, by itself, amount to divination. The Text’s authors were familiar with divinatory practice and wrote in its manner, but they were not themselves consulting the figures. Later users treated their words as oracles, seeking guidance about what might happen and whether to continue or withdraw from a proposed course. The account thus distinguishes the cosmological premise of correspondence from the historical use of the hexagrams as a means of divination.

The sage as interpreter of the world

The Great Treatise presents the sage as the figure capable of grasping and representing the world’s complexity. It says that the sage surveyed the phenomena under Heaven, considered how they could be figured, and represented both their material forms and their character through diagrams. Another passage imagines the Yijing as embracing the transformations of Heaven and Earth, adapting to complete the nature of all things, and penetrating the course of day and night. The diagrams’ authority, in this vision, arises from their power to render a changing totality rather than from resemblance to any single object.

The Treatise also describes the sage’s conduct as consonant with this knowledge. Because the sage resembles Heaven and Earth, his knowledge embraces all things and his actions aim to help all under Heaven. He responds to circumstances without being swept along by them, rejoices in Heaven and knows its ordinances, and rests in his position while cherishing benevolence. The cosmological correspondence is thus linked to an ethical ideal: understanding change means neither resisting every transformation nor surrendering judgment to circumstance, but acting responsively without losing one’s bearings.

The translator’s limits on cosmological interpretation

The translator does not treat every proposition in the Great Treatise as a transparent description of the world. He calls its claims about the sage extravagant, while still setting out what they assert: an encompassing grasp of transformations and an ability to represent the forms and character of phenomena. This distinction matters. Reporting the Treatise’s vision does not require accepting every later system built from it, and the translator’s reading separates the text’s account of change from a more elaborate metaphysics attributed to the tradition.

In particular, he rejects the assumption that yin and yang in the Appendix already denote a primary ethereal substance that expands as yang and contracts as yin. He notes that Chinese commentators, Philippe Grégoire Regis, and Walter Henry Medhurst repeat this interpretation, but says he has found no proof for it. In his chronology, a doctrine of primary matter took more than a thousand years after the Yijing’s completion to develop in the Confucian school and did not reach full form until the Song dynasty, in the eleventh and twelfth centuries. To read that mature doctrine back into the earlier text is, he argues, to put the last first. The Great Treatise’s subject is the ceaselessly changing phenomena of nature and experience, not creation or cosmogony.

Text, Appendixes, and the making of a classic

The translator’s account of correspondence is inseparable from his insistence that the older Text and its later Appendixes must be distinguished. He dates the Text to King Wen in 1143 BC and the Duke of Zhou roughly thirty to forty years later, while placing the Appendixes, even if they are attributed to Confucius, no earlier than 483 BC—six to seven centuries after the Text. The Great Treatise belongs to the later interpretive layer. It can illuminate how readers in that period connected the figures to their meanings, but it should not automatically be treated as the original authors’ own explanation of them.

The distinction had consequences for how the classic was read. In common editions, five Appendixes were broken up and printed alongside the Text, a layout that the translator says mixed incongruous ideas and made the meaning harder for foreign students to grasp. The imperial Kangxi edition, published in 1715, printed the two parts separately, though many critics continued to regard them as one homogeneous work and to attribute all the Appendixes to Confucius. The translator argues that this blending obstructed understanding; separating the layers makes it possible to read the cosmology of the Great Treatise as a later interpretation of the figures rather than silently folding it into the older Text.

The work’s history also shows how divination helped preserve the classic. During Qin Shi Huang’s book burning in 213 BC, the Yijing escaped destruction because the order made an exception for books on medicine, divination, and husbandry, and the Yijing was classified as a divination text. By the beginning of the common era, Liu Xin’s imperial-library catalogue listed works on the Yijing and its Appendixes from thirteen authors or schools, comprising 294 portions. The Kangxi edition later quoted 218 commentators, spanning from the second century BC to the seventeenth century. These layers of commentary and editorial arrangement shaped the terms in which correspondence between figures and nature could be understood, debated, and transmitted.