起信論註 1.34

1.34

以覺體有四大淨義故與空等猶如淨鏡。本覺四義下文當說。空四義者。第一空無一相能含一切物（答。第一空無一相能含一切物者。答。一切眾生體有垢故色像則不現。故言空無一相）則能含一切物。答。眾生體若淨也。一切世間境界悉於中現猶如於鏡鏡若有垢色像不現。鏡若淨一切色像悉於中現。問。第二空義離垢顯淨空示現一切物（答。眾生心若離垢則能示現一切物世間）境界悉於中現。答。眾生心者猶如虛空。虛空中若無雲無風塵則能一切間境界悉於中現。亦如淨鏡。問。第三之空義。鏡四義者。答。空無外物體含眾像出垢諸塵垢現像為物用。答。空無外物者只是真如體中本來無妄相。妄相人真如體不得。只緣無妄故一切境界向真如心上現來。故云體含眾像出離諸塵垢現像為物用者。答。眾若干種心總向真如心上現來隨眾生心示現萬化皆能利益一切眾生故名為物用。答第四空義了。由此空鏡以況於真。

Because the essence of enlightenment has four great pure meanings, it is equal to empty space and like a clear mirror. The four meanings of original enlightenment will be spoken of below. Regarding the four meanings of empty space: first, being empty and devoid of any single mark, yet able to contain all things. (Answer: Regarding 'first, being empty and devoid of any single mark, yet able to contain all things': Answer: Because the essence of all sentient beings has defilement, forms and images do not appear; hence it is said to be 'empty and devoid of any single mark'.) Then it can contain all things. Answer: If the essence of sentient beings is pure, all worldly spheres of cognition appear within it, just as in a mirror: if the mirror has dirt, forms and images do not appear; if the mirror is pure, all forms and images appear within it. Question: The second meaning of empty space is leaving defilement to reveal the pure space, manifesting all things. (Answer: If the minds of sentient beings leave defilement, then they can manifest all things; worldly) spheres of cognition all appear within it. Answer: The mind of sentient beings is like empty space: if in empty space there are no clouds, wind, or dust, then all worldly spheres of cognition appear within it, also like a clear mirror. Question: The third meaning of empty space. Regarding the four meanings of the mirror: Answer: being empty of external objects, its essence contains all images, emerging from all dirt and dust, and manifesting images as the function for beings. Answer: 'Being empty of external objects' means merely that within the essence of tathatā there are originally no delusory marks. Delusory marks cannot enter the essence of tathatā. Only because there is no delusion do all spheres of cognition appear upon the mind of tathatā. Hence it says 'its essence contains all images, emerging from all dirt and dust, and manifesting images as the function for beings'. Answer: The various kinds of minds all appear upon the mind of tathatā; following the minds of sentient beings, it displays myriad transformations, all able to benefit all sentient beings; hence it is called 'the function for beings'. The fourth meaning of empty space is concluded. Through this empty space and mirror, the real is illustrated.)