天籟

From Zhuangzi, Chapter 2 (《莊子·齊物論》):

子游曰：「地籟則眾竅是已，人籟則比竹是已。敢問天籟。」子綦曰：「夫吹萬不同，而使其自已也，咸其自取，怒者其誰邪！」 [Classical Chinese, trad.]

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子游曰：「地籁则众窍是已，人籁则比竹是已。敢问天籁。」子綦曰：「夫吹万不同，而使其自已也，咸其自取，怒者其谁邪！」 [Classical Chinese, simp.]

From: Zhuangzi, circa 3^rd – 2^nd centuries BCE, translation from The Complete Works Of Chuang Tzu (2013), by Burton Watson

Zǐyóu yuē: “Dìlài zé zhòng qiào shì yǐ, rénlài zé bǐ zhú shì yǐ. Gǎnwèn tiānlài.” Zǐqí yuē: “Fú chuī wàn bùtóng, ér shǐ qí zìyǐ yě, xián qí zìqǔ, nù zhě qí shéi xié!” [Pinyin]

Ziyou said, "By the piping of earth, then, you mean simply [the sound of] these hollows, and by the piping of man, [the sound of] flutes and whistles. But may I ask about the piping of Heaven?" Ziqi said, “Blowing on the ten thousand things in a different way, so that each can be itself—all take what they want for themselves, but who does the sounding?"

天籟

1. (literary) sounds of nature