The Valley Spirit Never Dies
Names a "mysterious female" life-force associated with emptiness and low ground, describing it as the endlessly productive root from which heaven and earth continually issue.
Chapter 6 is short and dense: "the valley spirit never dies; this is called the mysterious female." A valley, like a womb, is defined by its hollowness — it is precisely its emptiness that lets it receive water, hold life, and keep producing without being used up. The chapter calls this hollow, generative space "the root of heaven and earth," adding that it works so continuously and effortlessly that using it never exhausts it. The feminine imagery here isn't incidental: Taoist cosmology repeatedly favors receptive, yielding, gestational metaphors over active, assertive ones when describing how the Tao generates the world. Chapter 6's valley anticipates the fuller emptiness imagery of chapters 4 and 11 — an early, compressed statement that what is empty and low is not weak but inexhaustibly fertile.
The valley spirit never dies; this is called the mysterious female.
The "mysterious female" of chapter 6 became an important image in later Taoist internal alchemy texts, which read it as a generative center within the practitioner's own body.
Tao Te Ching