觀心論疏 4.10

4.10

問：眾生六根法界十如皆悉無常，佛既有者，亦應無常耶？答：經云「所謂彼眼根，於諸如來常，具足無減修，了了分明見。乃至彼意根，於諸如來常，具足無減修，了了分明知」。經云彼者，彼指眾生，是則眾生六根於諸如來是常，況佛有肉眼等諸根而不是常耶？經云「凡人所知者，名為世諦；如來所知者，名為真諦」。斯則雖同照一境，境隨於照有真俗之殊，雖同有六根而有常無常之異也。

Question: The ten suchnesses of the dharma-realms of the six sense faculties of sentient beings are all impermanent; since the Buddha possesses them, should they also be impermanent? Answer: The sūtra says: "As for that eye faculty, in all Tathāgatas it is eternal, completely cultivated without reduction, seen clearly and distinctly. Up to: that mind faculty, in all Tathāgatas it is eternal, completely cultivated without reduction, known clearly and distinctly." When the sūtra says "that," "that" refers to sentient beings; this means that sentient beings' six faculties are eternal in the Tathāgatas—how much more so that the physical eye and the other faculties possessed by the Buddha are not impermanent! The sūtra says: "What ordinary people know is called conventional truth; what the Tathāgata knows is called ultimate truth." Thus, although they identically illuminate one object, the object, depending on the illumination, has the distinction of ultimate and conventional; although they identically possess the six faculties, there is the difference of permanence and impermanence.