虚渊之宗：论《道德经》第四章的本体与工夫

The Ancestor of the Abyss: On the Ontology and Practice of Dao De Jing Chapter 4

一、道冲：虚而不空之用

I. The Dao is Empty: Utility in Non-Being

《道德经》第四章开篇云：“道冲，而用之或不盈。”此“冲”字，古本作“盅”，本义为器之虚中。世人多以“有”为用，见形见质，方谓之实；然老子独标“虚”用，以为惟虚故能涵容，惟空故能不竭。

The fourth chapter of the Dao De Jing opens with the line: “The Dao is empty, yet when utilized, it is never exhausted.” The character chong (冲) here, often written as zhong (盅) in ancient texts, originally refers to the hollow center of a vessel. The common mind values “being” as useful—only what has form and substance is deemed real. Yet Laozi singles out the utility of “emptiness.” It is precisely because it is empty that it can contain; precisely because it is void that it is inexhaustible.

此非玄谈，乃实理也。试观天地之间：山谷虚空，故能回响万音；室屋虚空，故能安住人身；车轮中空，故能运转千里。若皆实而满之，则音不能传，人无所居，车不能行。道之体亦然。道非一物，故不滞于一隅；非一形，故不穷于一用。人若执实，则智识有尽；心若守虚，则灵源不竭。故“用之或不盈”者，非道有所吝，乃虚怀之妙用也。

This is not abstract metaphysics, but practical truth. Look between heaven and earth: the valley is empty, thus it echoes all sounds; the room is empty, thus it shelters the human body; the wheel’s hub is hollow, thus it rolls a thousand miles. If all were solid and full, sound could not travel, people could not dwell, and wheels could not turn. The same holds for the Dao. The Dao is not a single thing, thus it does not cling to one corner; it has no fixed form, thus it is not limited to one function. If one clings to the “real,” wisdom reaches its limit; if the mind abides in emptiness, the source of spirit never runs dry. Therefore, “never exhausted in its use” is not because the Dao withholds itself, but because of the subtle function of an empty mind.

二、渊兮：万物之宗的深默

II. How Deep It Is: The Silent Source of All Things

继而言“渊兮，似万物之宗”。“渊”者，水深而静，不可测也。道之体，非感官所能逮，非言语所能穷。其静也，如深渊之寂；其深也，如万化之根。世人逐末，见万物之纷纭，而不知其本；老子反本，于幽深静默处，见万物之所从出。

Next comes: “How deep it is, like the ancestor of all things.” Yuan (渊) means water deep and still, unfathomable. The substance of the Dao cannot be grasped by the senses or exhausted by words. Its stillness is like the silence of the abyss; its depth is like the root of all transformations. Worldly people chase the branches—seeing the chaos of myriad things without knowing their root. Laozi returns to the root, seeing in the deep silence the origin from which all things emerge.

此“宗”字，极有意味。宗者，祖也，本也，归也。万物生于有，有生于无，而无非顽空，乃“冲”之妙体。故道为万物之宗，非如造物主之高高在上，以意造物；乃如深渊之涵育，以虚受物。万物自生自化，而道未尝为之宰；万物归根复命，而道未尝离其宗。此所以“渊兮”而不可识也。

The word zong (宗)—ancestor—is deeply significant. It means origin, root, and return. All things are born from “being,” and being is born from “non-being.” Yet this non-being is not a mere void, but the subtle substance of “emptiness.” Thus, the Dao is the ancestor of all things—not like a creator-god who stands above and fashions things by will, but like the abyss that nurtures by receiving. All things arise and transform of themselves, yet the Dao does not dominate them; all things return to their root and destiny, yet the Dao never departs from its source. This is why it is “deep” and beyond knowing.

三、挫锐解纷：虚道在世的工夫

III. Blunting Edges and Unraveling Knots: The Practice of the Empty Dao

老子于此章后文，复言“挫其锐，解其纷，和其光，同其尘”。此四句，正是由本体开出的工夫，是“道冲”在人身上的落实。

Laozi continues in this chapter: “Blunt the sharpness, unravel the knots, soften the glare, and become one with the dust.” These four lines unfold the practice derived from the ontology—the embodiment of “the Dao is empty” within the human person.

• 挫其锐：锐者，锋芒也，刚强也。世人逞智斗力，锋芒外耀，如器之锐，易折易缺。道体冲虚，无锋无刃，故能长保。人能挫其锐，则刚强化为柔弱，争竞化为不争。

• 解其纷：纷者，纠结也，妄念也。心若满实，则分别计较，纷然杂乱。心若冲虚，则如镜之空，物来则现，物去则空，何纷之有？

• 和其光：光者，炫耀也，自见也。道隐无名，光而不耀。人能和其光，则不自以为是，不自我彰显，与物无伤。

• 同其尘：尘者，微末也，俗世也。道在蝼蚁，在稊稗，在瓦甓。圣人不弃尘俗，而能于尘中见道。同其尘者，非同流合污，乃不立异于俗，不标榜于众，和光同尘，而内不失其真。

• Blunt the sharpness: The sharp is the cutting edge, the rigid. Worldly people flaunt intellect and force; their sharpness shines outward like a blade—easy to break, easy to chip. The Dao is empty and yielding, without edge or blade, thus it endures. If one blunts the sharpness, rigidity turns to softness, and contention turns to non-contention.

• Unravel the knots: The knotted are entanglements, deluded thoughts. If the mind is full, it discriminates and calculates, falling into chaos. If the mind is empty, it is like a clear mirror: images appear when things come, and vanish when they go. Where is the chaos?

• Soften the glare: The glare is dazzling light, self-display. The Dao is hidden and nameless, shining without dazzling. If one softens the glare, one no longer clings to self-righteousness or self-promotion, and comes to no harm from things.

• Become one with the dust: The dust is the minute, the mundane world. The Dao is present in ants, in weeds, in tiles and bricks. The sage does not reject the mundane but sees the Dao within it. To be one with the dust is not to wallow in corruption, but to avoid standing apart from the world or parading oneself before the crowd—blending with the light and dust while inwardly preserving the truth.

此四句，总归于“虚”。虚故能容，虚故能化。人能体此，则处世如深渊之静，应物如虚空之用，虽万变而不离其宗矣。

These four lines all return to “emptiness.” Because it is empty, it can contain; because it is empty, it can transform. If one embodies this, then one dwells in the world with the stillness of the abyss and responds to things with the utility of emptiness—though all things change, one never departs from the root.

四、结语：虚渊之教，今犹未央

IV. Conclusion: The Teaching of the Empty Abyss Remains Unfinished

老子以“冲”状道体，以“渊”喻道深，非为炫奇，乃欲人去实归虚，返本复命。今之世，智巧日增，争竞日烈，人心填不满欲，外物塞不通灵。重读此章，如临深渊，如闻空谷。知“道冲而用之或不盈”，则知满不如虚，强不如柔；知“渊兮似万物之宗”，则知末不如本，动不如静。

Laozi uses “emptiness” to describe the Dao’s substance and “the abyss” to illustrate its depth—not to astonish, but to lead people away from the solid toward the empty, back to the root and destiny. In our age, cleverness grows daily, contention intensifies, the heart is never filled by desire, and external things clog the spirit. To reread this chapter is to stand before a deep abyss, to hear an echo in an empty valley. To understand that “the Dao is empty, yet never exhausted in its use” is to know that fullness is inferior to emptiness, rigidity to softness. To understand that it is “deep, like the ancestor of all things” is to know that the branches are inferior to the root, and restless action to stillness.

道在虚中，宗在渊底。惟虚心者，能入其门；惟静深者，能得其宗。愿以此文，为问道者一助云尔。

The Dao dwells in emptiness; the ancestor lies at the bottom of the abyss. Only the empty-minded can enter its gate; only the deeply still can attain its root. May this essay serve as a small aid to those who seek the Dao.

继续阅读：道德经   道冲   渊兮   似万物之宗   深渊

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