大乘起信論別記 1.29

1.29

言「依如來藏故有生滅心」者，謂不生滅心因無明風動作生滅，故說生滅心依不生滅心。然不生滅心與生滅心，心體無二，但將二義，取心為二，以說依耳。如不動水為風所吹而作動水，動靜雖異，水體是一，而得說言依靜水故有其動水。當知此中道理亦爾。如下論云「自性清淨心，因無明風動。」又四卷經云：「如來藏為無始惡習所熏，名為識藏。」又言「剎那者，名為識藏。」當知此云有生滅心，正謂識藏。今通取所依如來藏與能依生滅心，合為心生滅門。故言「心生滅門」者，依如來藏故有生滅心，非舉如來藏而取生滅心為生滅門也。如下文之「此識有二種義」，故知二義皆在生滅門也。

Regarding the statement, "Based on the tathāgatagarbha, there is the mind of arising and ceasing," this means that the non-arising and non-ceasing mind, moved by the wind of avidyā, produces arising and ceasing; hence it is said that the mind of arising and ceasing is based on the non-arising and non-ceasing mind. However, the non-arising and non-ceasing mind and the mind of arising and ceasing are not two in mental essence; it is only by taking the two meanings that the mind is taken as two, in order to speak of "based on." Just as still water, blown by wind, becomes moving water, and although moving and stillness differ, the water's essence is one, yet it can be said that based on still water there is its moving water. One should know that the principle here is also like this. As the treatise says below: "The naturally pure mind is moved by the wind of avidyā." Also, the Four-fascicle Sūtra says: "The tathāgatagarbha, perfumed by beginningless evil predispositions, is called the storehouse consciousness." It also says: "The momentary is called the storehouse consciousness." One should know that what is called here the "mind of arising and ceasing" refers precisely to the storehouse consciousness. Now, universally taking the based-upon tathāgatagarbha and the relying mind of arising and ceasing together constitutes the gate of the arising and ceasing of the mind. Therefore, regarding the statement "the gate of the arising and ceasing of the mind," it is that based on the tathāgatagarbha there is the mind of arising and ceasing; it does not set aside the tathāgatagarbha and take only the mind of arising and ceasing as the gate of arising and ceasing. As the text below says, "this consciousness has two meanings"; hence we know that both meanings are within the gate of arising and ceasing.