諸經要集 10.121

10.121

又書云。己所不欲勿施於人。當知內外之教其本均同。雖形有黑白。然立行無殊。若乖斯旨便同鄙俗。何依內外。如經云。佛為眾生說法。斷除無明暗惑。猶若良醫隨疾授藥。是名內教又書云。天道無親。唯仁是與。是名外教。又若出家之人。能觀苦空無常無我。遠離生死。志求出世。是為依內。若乖斯行翻為外俗。在家之人。若能厭捨俗情。欣慕高志。專崇三寶。修持四德。奉行孝悌仁義禮智。貞和愛敬。能行斯行翻同為內。若違斯旨還同外道。在俗之人。能隨內教。便悟真理。心常會道。漸進勝途至趣菩提。既知如是。欲行此行。唯須自卑推德與他。如拭塵巾。攬垢向己。持淨與人。故經云。退而得者佛道也。

Furthermore, a [secular] book states: What you do not desire for yourself, do not do to others. One should know that the internal and external teachings are fundamentally identical: although their forms differ as black and white, their established practices are no different. If one goes against this principle, one becomes just like the vulgar crowd, so how could one rely on the internal or external? As a sūtra states: The Buddha preaches the Dharma for sentient beings, severing the dark delusions of ignorance, just like a skilled physician administering medicine according to the disease—this is called the internal teaching. Furthermore, a [secular] book states: The Way of Heaven has no personal favorites; it only sides with the benevolent—this is called the external teaching. Furthermore, if one who has gone forth can contemplate suffering, emptiness, impermanence, and non-self, stay far away from birth-and-death, and resolve to seek transcendence of the world, this is relying on the internal. If one goes against this practice, one turns into an external worldly person. If a householder can weary of and abandon worldly sentiments, admire and aspire to lofty intentions, exclusively venerate the Triratna, cultivate the four virtues, and put into practice filial piety, brotherly affection, benevolence, righteousness, propriety, wisdom, chastity, harmony, love, and respect, and can carry out such practices, they conversely become like the internal. If they violate this principle, they return to being the same as non-Buddhists. If a worldly person can follow the internal teaching, they will realize the true principle; their mind will constantly accord with the Way, and they will gradually advance on the supreme path and arrive at bodhi. Having understood this, if one wishes to carry out this practice, one need only humble oneself and accord virtue to others, like a cloth wiping away dust, taking the grime onto oneself and offering cleanliness to others. Therefore, a sūtra states: One who retreats and gains it achieves the Buddha Path.