Chapter 30
He who would assist a lord of men in harmony with the Dao will not assert his mastery in the kingdom by force of arms. Such a course is sure to meet with its proper return. Wherever a host is stationed, briars and thorns spring up. In the sequence of great armies there are sure to be bad years. A skilful (commander) strikes a decisive blow, and stops. He does not dare (by continuing his operations) to assert and complete his mastery. He will strike the blow, but will be on his guard against being vain or boastful or arrogant in consequence of it. He strikes it as a matter of necessity; he strikes it, but not from a wish for mastery. When things have attained their strong maturity they become old. This may be said to be not in accordance with the Dao: and what is not in accordance with it soon comes to an end.
第三十章
以道佐人主者，不以兵强天下，其事好还①。师之所处，荆棘生焉。大军之后，必有凶年②。善有果③而已，不敢④以取强⑤。果而勿矜，果而勿伐，果而勿骄，果而不得已，果而勿强。物壮⑥则老，是谓不道⑦，不道早已⑧。
译文
依照“道”的原则辅佐君主的人，不以兵力逞强于天下。穷兵黩武这种事必然会得到报应。军队所到的地方，荆棘横生，大战之后，一定会出现荒年。善于用兵的人，只要达到用兵的目的也就可以了，并不以兵力强大而逞强好斗。达到目的了却不自我矜持，达到目的了也不去夸耀骄傲，达到目的了也不要自以为是，达到目的却出于不得已，达到目的却不逞强。事物过去强大就会走向衰朽，这就说明它不符合于“道”，不符合于“道”的，就会很快死亡。
注释
1、其事好还：用兵这件事一定能得到还报。还：还报、报应。
2、凶年：荒年、灾年。
3、善有果：果，成功之意。指达到获胜的目的。
4、不敢：帛书本为“毋以取强”。
5、取强：逞强、好胜。
6、物壮：强壮、强硬。
7、不道：不合乎于“道”。
8、早已：早死、很快完结。