磨而不磷，湼而不缁

Explanation: That a very strong thing, grinding mill also does not thin; very white thing, not the black dye also stained. Metaphor without environmental impact, stand the test. Phrase from the "Analects, XVII": "Kennedy did not say almost? Grinding without phosphorus. Do not say white or Down? Uncontaminated." Zhu Xi's Annotations: "P and thin too. Nirvana, soap dye material. A spokesman for the poor not 浼 had. "Han Lu Jia," New words the base ":" clean-clear, moist and moisten; grinding without phosphorus, uncontaminated. "Ming Zhi" Comments on History of Tang Ji Zhongzong Emperor ":" If Digong who really grinding and not the so-called P, uncontaminated. "" The Tale of Heroes "second five back:" In fact, his faith and the lotus flower in the mud, but not stained magic bullet, really a mill rather than the condition of phosphorus uncontaminated. "province is also a" grinding is not P, nirvana is not Buddhists. " An evening of Song, "Stone Xianghou Stone Imperial Academy in the virtual inter Patent": "Round conventions, parties into the moment, the cold if the generalist; grinding is not P, Nirvana does not Buddhists, Yiran Ya Cao."