Zhuangzi’s writings seldom employ the technical vocabulary of “yin and yang,” yet the spirit of his thought closely mirrors what that later terminology came to express. He consistently portrays the world as a fluid process in which apparent opposites—right and wrong, big and small, life and death, success and failure—arise together, depend on one another, and transform into each other. Distinctions such as good and bad or beautiful and ugly are treated as relative, provisional markings within a larger, ever-shifting field of experience. Rather than opposing two fixed poles, his vision suggests a single, dynamic reality in which contrasts are mutually defining and never absolute.

Within this vision, transformation is central. Everything is in flux, and no standpoint can claim final authority, because any position can, under different conditions, reverse into its apparent opposite. This is closely aligned with the image of alternating phases—like day and night, activity and rest—without requiring a formal doctrine of yin and yang. The sage, in this perspective, is one who recognizes the relativity of all such distinctions and refuses to cling rigidly to any single side of a pair, seeing instead the pattern that holds them both.

Zhuangzi’s ideal of “free and easy wandering” expresses how such insight shapes a way of life. To live in accord with the Dao is to move spontaneously with changing circumstances, neither resisting nor forcing, but allowing each situation to unfold according to its own nature. This resonates with the idea of letting complementary tendencies balance themselves, rather than imposing a one-sided will that disrupts their natural alternation. Non-interference and naturalness thus become practical expressions of a deeper trust in the ongoing interplay of contrasting forces.

From this standpoint, wisdom is not found in choosing one pole—such as order over chaos, or life over death—but in attuning to the larger process in which both have their place. Emotional equanimity and ethical flexibility follow from recognizing that joy and sorrow, gain and loss, are intertwined expressions of a single, ceaseless movement. Zhuangzi’s philosophy, while not a systematic theory of yin and yang, embodies the same dynamic logic: a world where opposites are complementary, where transformation is constant, and where genuine harmony arises from flowing with, rather than against, the shifting currents of existence.