Within the depth-psychology and comparative-religious corpus assembled under the Seba library, the dyad of yin and yang functions as far more than a cosmological curiosity imported from Chinese thought. It operates as a living conceptual framework for understanding polarity, opposition, and complementarity — themes that run through Jungian psychology, I Ching scholarship, Taoist alchemy, and comparative mythology alike. Jung himself invokes the terms directly to elucidate the active and passive dimensions of the collective unconscious, grounding the yang/yin polarity in archetypal masculine and feminine dynamics. Sinological voices — Wilhelm, Huang, Wang Bi, Liu I-ming — treat the dyad as the structural axis of the I Ching itself, with yin and yang not as static opposites but as interpenetrating, mutually generative forces whose dynamic interplay constitutes the very fabric of change. Joseph Campbell situates the Chinese dualism within a global comparative frame, noting its formal analogy to the Indian liṅgaṃ-yoni while insisting on the distinctly abstract, geometrical temperament of its Chinese expression. A persistent tension runs through the corpus: whether yin and yang are ultimately reconcilable in a higher unity (the Tao, or the Jungian Self), or whether their ceaseless alternation is itself the ultimate reality. The alchemical tradition, particularly in Liu I-ming, adds a soteriological register — the practitioner must work with yin and yang energies consciously, lest yin overwhelm and dissolve the yang that sustains life.
The entire I Ching is concerned with the relationship between yin and yang. Yin and yang represent two aspects. In the yang aspect, there are yin features and yang features.
Huang argues that yin and yang are not simple opposites but interpenetrating qualities, and that their harmonious or antagonistic relationship determines the entire moral and cosmological logic of the I Ching.
, The Complete I Ching: The Definitive Translation, 1998thesis
we approach certain concepts of Chinese philosophy expressed in Yang, 4, the male principle, and Yin, ¢, the female principle.
Jung draws a direct parallel between his psychological concepts of active and passive dimensions of the collective unconscious and the Chinese philosophical dyad of yang (male, active) and yin (female, receptive).
, Dream Analysis: Notes of the Seminar Given in 1928-1930, 1984thesis
underlying all is the elementary principle of a dialectic of two forces, yang and yin — which, in a way, is analogous to the Indian of the liṅgaṃ and yoni.
Campbell positions yang and yin as China’s abstract, geometrically expressed equivalent of the Indian sexual cosmological dualism, while noting that the Chinese tendency resists the lush extremism of the Indian mythological imagination.
, Oriental Mythology: The Masks of God, Volume II, 1962thesis
This world of the immutable is the daemonic world, in which there is no free choice, in which everything is fixed. It is the world of yin. But in addition to this rigid world of number, there are living trends.
Wilhelm distinguishes yin as the fixed, calculable, immutable dimension of reality from yang as the living, transformative current — framing the dyad as the ontological basis for the I Ching’s entire philosophy of change.
, The I Ching or Book of Changes, 1950thesis
so as to elucidate the source of essence and life, the reality and falsehood of yin and yang, the laws of cultivation and practice, the order of work.
Cleary and Liu I-ming present the Taoist alchemical tradition as fundamentally concerned with discerning authentic from counterfeit yin and yang as a practical soteriological discipline.
, The Taoist I Ching, 1986supporting
When yin culminates, yang is born; there is yang within yin — this is called ‘a companion comes.’ If yin does not culminate, yang is not born.
Liu I-ming articulates the classical Taoist doctrine that yin and yang are not merely opposed but mutually generative — the full exhaustion of yin is the very condition for the birth of yang.
, The Taoist I Ching, 1986supporting
When Qian and Kun form ranks, change stands in their midst, but if Qian and Kun were to disintegrate, there would be no way that change could manifest itself.
Wang Bi establishes that Pure Yang (Qian) and Pure Yin (Kun) are the ontological preconditions for all change, without whose polarity the entire I Ching system collapses into silence.
, The Classic of Changes: A New Translation of the I Ching as Interpreted by Wang Bi, 1994supporting
using yin to complete yang. In using yin to complete yang, it is most important for withdrawal to be prompt; if prompt, the yang energy is strong and the yin energy is weak.
Cleary’s rendering of Liu I-ming presents yin not as mere passivity but as the necessary instrumental force by which yang is brought to completion — a dynamic, teleological understanding of the dyad.
, The Taoist I Ching, 1986supporting
what is able to preserve yang in the midst of yin is the power of the practice of reverse operation of sages.
Liu I-ming frames the yin-yang dynamic in explicitly soteriological terms: the preservation of yang against yin’s stripping action requires the active, counter-natural discipline of the Taoist adept.
, The Taoist I Ching, 1986supporting
yin and yang fragment, and the previous accomplishment all goes to waste. Danger is then unavoidable.
Liu I-ming warns that the fragmentation of the yin-yang dyad — the loss of their regulated interplay — constitutes the gravest danger in alchemical practice, undoing all prior spiritual attainment.
, The Taoist I Ching, 1986supporting
so as to elucidate the source of essence and life, the reality and falsehood of yin and
This passage, paralleling the Cleary translation, confirms that discerning authentic from false yin and yang is the central epistemological challenge of Taoist inner alchemy.
, The Taoist I Ching, 1986supporting
what Chang San-feng here refers to as the true mind is called the ‘mind of Tao.’ The mind of Tao is in this text associated with ‘celestial’ yang, in contrast to the ‘human mind,’ or human mentality, associated with ‘mundane’ yin.
Cleary maps the yin-yang dyad onto a psychological distinction between the enlightened ‘mind of Tao’ (celestial yang) and the conditioned, unstable ‘human mentality’ (mundane yin).
, The Taoist I Ching, 1986supporting
the final world principle, which antedates realization and is not yet divided by the drawing apart of the opposites on which emergence into reality depends.
Wilhelm locates the Tao as the undivided source prior to the differentiation of yin and yang, framing the emergence of reality itself as contingent upon the drawing apart of these primal opposites.
, The Secret of the Golden Flower: A Chinese Book of Life, 1931supporting
these animals are indeed only symbols for the polar tension between the sexes originating in the fundamental antithesis of cosmic forces.
Hellmut Wilhelm traces the mythological animal symbolism of the I Ching — dragon, mare, phoenix — to the underlying yin-yang polarity of cosmic forces, showing how abstract cosmology is encoded in mythic imagery.
, Change: Eight Lectures on the I Ching, 1960supporting
no yang that is not strong and no yin that is not submissive. This is why it says it is auspicious to go forth.
Liu I-ming uses the hexagram commentary to illustrate the ideal yin-yang relationship as one of ordered complementarity — strong yang and submissive yin together producing auspicious outcomes.
, The Taoist I Ching, 1986aside
the contest between the mind of Tao and the human mentality is a matter of a hairbreadth — on this side, the mind of Tao, on that side, the human mentality.
Cleary employs the celestial yang / mundane yin distinction to dramatize the precarious inner contest between enlightened awareness and conditioned reactivity in the practitioner’s mind.
, The Taoist I Ching, 1986aside