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原文
道冲而用之或不盈。渊兮似万物之宗。挫其锐，解其纷，和其光，同其尘。湛兮似或存。吾不知谁之子，象帝之先。
王弼注
道冲而用之或不盈，渊兮似万物之宗；挫其锐，解其纷，和其光，同其尘，湛兮似或存。吾不知谁之子，象帝之先。夫执一家之量者，不能全家。执一国之量者，不能成国。穷力举重，不能为用，故人虽知，万物治也，治而不以二仪之道，则不能赡也。地虽形魄，不法于天则不能全其宁。天虽精象，不法于道则不能保其精。冲而用之，用乃不能穷满以造实，实来则溢，故冲而用之，又复不盈，其为无穷亦已极矣。形虽大，不能累其体，事虽殷，不能充其量，万物舍此而求主，主其安在乎。不亦渊兮似万物之宗乎。锐挫而无损，纷解而不劳，和光而不污，其体同尘而不渝，其真不亦湛兮似或存乎。地守其形，德不能过其载，天慊其象，德不能过其覆，天地莫能及之，不亦似帝之先乎。帝，天帝也。
英文 · James Legge
(The fountainless) The Dao is (like) the emptiness of a vessel; and in our employment of it we must be on our guard against all fulness. How deep and unfathomable it is, as if it were the Honoured Ancestor of all things! We should blunt our sharp points, and unravel the complications of things; we should attemper our brightness, and bring ourselves into agreement with the obscurity of others. How pure and still the Dao is, as if it would ever so continue! I do not know whose son it is. It might appear to have been before God.