維摩經略疏垂裕記 4.24

4.24

問：何故云非垢非淨？答：有事理故。論理不當垢之與淨，約事唯有寂光永淨。又寂光異諸土故非垢，即諸土故非淨；諸土即寂光故非垢，異寂光故非淨。

Question: Why is it said to be neither defiled nor pure? Answer: Because there are phenomena and principle. In terms of principle, neither defilement nor purity applies; in terms of phenomena, only quiescent light is eternally pure. Furthermore, because quiescent light is different from the other lands, it is not defiled; because it is identical to the other lands, it is not pure. Because the other lands are identical to quiescent light, they are not defiled; because they are different from quiescent light, they are not pure.