四明十義書 1.68

1.68

《釋籤》文云：理本無差，差約事用。豈非心即性故何所不該，乃無差也。性即心故，心不是佛、佛不是生，乃云若以佛法觀之似如不逮，若以心性觀之似如可見。是知言心性者，專是凡夫一念陰識之性矣。

The text of the Shiqian says: "The principle is fundamentally without distinction; distinction is in terms of phenomenal functioning." Does this not mean that because mind is precisely the nature, there is nothing it does not encompass, and is thus without distinction? Because the nature is precisely the mind, the mind is not the Buddha, and the Buddha is not a sentient being; hence it says that if one contemplates it in terms of the Buddha-dharma, it seems beyond reach, but if one contemplates it in terms of mind-nature, it seems visible. One thereby knows that the term "mind-nature" refers exclusively to the nature of an ordinary person's single thought-moment of aggregate consciousness.