大乘起信論內義略探記 1.58

1.58

問。施此無明動於心體，成於染心，即無明是細，可障理智？染心是麁，可障理智？答：以此染心能所差別，而亦子根本智能所平等，所以能障理智也。無明內迷真理，識外見塵，故於如量之境，不能隨順種種智，所以能障量智。廣如二障章說也。

Question: Given that this avidyā moves the mental essence and brings about the defiled mind, then avidyā is subtle: could it obstruct the gnosis of principle? The defiled mind is coarse: could it obstruct the gnosis of principle? Answer: Because this defiled mind possesses the distinction of subject and object, and is also contrary to the equality of subject and object in fundamental gnosis, it is able to obstruct the gnosis of principle. Avidyā is deluded about true principle within and discriminates dusts outside through consciousness; hence, with respect to the objective realm that accords with quantity, it cannot conform to the manifold kinds of gnosis. Therefore, it is able to obstruct the gnosis of quantity. This is explained extensively as in the chapter on the two obstacles.