Tao Te Ching · Ch. 63

為無為,事無事,味無味。大小多少,報怨以德。圖難於其易,為大於其細;天下難事,必作於易;天下大事,必作於細。是以聖人終不為大,故能成其大。夫輕諾必寡信,多易必多難。是以聖人猶難之,故終無難矣。

Wéi wú wéi, shì wú shì, wèi wú wèi. Dà xiǎo duō shǎo, bào yuàn yǐ dé. Tú nán yú qí yì, wéi dà yú qí xì; Tiān xià nán shì, bì zuò yú yì; Tiān xià dà shì, bì zuò yú xì. Shì yǐ shèng rén zhōng bù wéi dà, gù néng chéng qí dà. Fú qīng nuò bì guǎ xìn, duō yì bì duō nán. Shì yǐ shèng rén yóu nán zhī, gù zhōng wú nán yǐ.

Act through non-action; attend to affairs without interference; taste the tasteless. Regard the small as great and the few as many; repay injury with virtue. Plan for the difficult while it is still easy; accomplish the great while it is still small. All difficult things in the world begin as easy ones; all great things begin as small ones. Therefore the sage never attempts what is great, and so achieves greatness. One who makes promises lightly will rarely keep them; one who treats many things as easy will find many things hard. Therefore the sage treats everything as difficult, and in the end encounters no difficulty.

— Tao Te Ching 63

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