Dōgen Zenji, a Zen Buddhist teacher
Dōgen Zenji (道元禅師: 1200-1253), born in Kyoto, was a Zen Buddhist teacher in the Kamakura period (1185-1333).
He founded the Sōtō school of Zen in Japan in 1244 after traveling to China and training under the Chinese Caodong lineage there.
He is known for his extensive writing including the "Treasury of the Eye of the True Dharma" or "Shōbōgenzō" (正法眼蔵), a collection of ninety-five fascicles concerning Buddhist practice and enlightenment. The Shōbōgenzō is his masterpiece.
Another collection of his talks is the "Shōbōgenzō Zuimonki" (Gleanings from Master Dōgen’s Sayings: 正法眼蔵随聞記) in six volumes. These are talks that Dōgen gave to his leading disciple, Ejō, who became Dōgen’s disciple in 1234. The talks were recorded and edited by Ejō from 1235 to 1238.
Dōgen Zenji comments on Deaf people in the Gleanings from Master Dōgen’s Sayings:
"You sit in religious contemplation in a Buddhist temple, without chatting with other people, just like a Deaf or mute person. What is necessary is only to sit in religious contemplation."
Also he wrote for one of his disciples, who kept training himself with his words as follows:
"Because the Deaf people don't hear, they don't know what is going on in the world;
As they have nothing to worry, their heart remains pure:
As they don't emit any words, there is no worry that they face a calamity."