Keisei sanshoku (Japanese: 谿声山色), rendered in English as The Sounds of Valley Streams, the Forms of Mountains, is the 25th book of the Shōbōgenzō by the 13th century Sōtō Zen monk Eihei Dōgen.
The name keisei sanshoku is a quotation from the Song dynasty Chinese poet Su Shi, wherein he experiences the sound of the valley stream as the preaching of the dharma and the mountain as the body of the Buddha.
Dogen also discusses this verse of Su Shi in the later Shōbōgenzō books of Sansui Kyō and Mujō Seppō.
The name keisei sanshoku is a paraphrase from the Song dynasty Chinese poet Su Shi, wherein he experiences the sound of the valley stream as the preaching of the dharma and the mountain as the body of the Buddha.
[1] The poem of Su Shi's being referenced is as follows: The voices of the river valley are the [Buddha's] wide and long tongue, The form of the mountains is nothing other than his pure body.