Tao Te Ching · Ch. 33

知人者智,自知者明。勝人者有力,自勝者強。知足者富。強行者有志。不失其所者久。死而不亡者壽。

Zhī rén zhě zhì, zì zhī zhě míng. Shèng rén zhě yǒu lì, zì shèng zhě qiáng. Zhī zú zhě fù. Qiǎng xíng zhě yǒu zhì. Bù shī qí suǒ zhě jiǔ. Sǐ ér bù wáng zhě shòu.

Knowing others is wisdom; knowing oneself is enlightenment. Overcoming others requires force; overcoming oneself requires true strength. One who knows contentment is wealthy. One who acts with perseverance has will. One who does not lose their proper place endures. One who dies but does not perish has longevity.

— Tao Te Ching 33

Source: Wang Bi edition (Chinese) + Hanyu Pinyin transliteration