Tuoyue
Glossary: tuoyue 橐籥, the bellows — the Daodejing's image of the space between heaven and earth: empty yet inexhaustible, moved and yielding more. The tradition's machine-metaphor for emptiness as productivity.
Tuoyue (橐籥, tuóyuè) — the bellows, the Daodejing’s one machine-metaphor for the cosmic middle: “the space between heaven and earth — is it not like the bellows? Empty, yet not collapsing; moved, and more comes out” (ch. 5). Two parts make the word: 橐, the leather bag, and 籥, the blowpipe tubes — the smith’s air machine that produces by being empty. The chapter closes the thought with its practical name: “many words, frequent exhaustion — not as good as guarding the center” (多言数穷，不如守中).
Usage note: tuoyue is the tradition’s technology-image for the xu family: emptiness is not vacancy but capacity — the bag that never runs out because it holds nothing, the movement that yields more the more it is worked. It pairs with the water imagery of the Daodejing (the low place that gathers, ch. 8) and with the mirror of the Zhuangzi: empty vessels that are full of function. This site keeps the machine sense explicit (“bellows”), because the point is the machine: emptiness engineered, not emptiness as mere absence.
Sources
- Daodejing ch. 5: 'the space between heaven and earth — is it not like the bellows? Empty, yet not collapsing; moved, and more comes out' (天地之间，其犹橐籥乎？虚而不屈，动而愈出)