起信論疏筆削記 8.49

8.49

若本下，六、束四門成二義。謂始覺是末，不離本覺之本，故下文云：以始覺者，即同本覺。又云：而實無有始覺之異，乃至平等同一覺故。枝末不覺不離根本不覺，故下文云：當知無明能生一切染法，以一切染法皆是不覺相故。然本始二覺但是體用之異，本末二不覺但是麁細之異，豈得離體有用、離細有麁？故唯二也。

"If fundamental...", sixth, bundling the four approaches into two meanings. That is to say, actualized enlightenment is the branch and is not separate from the root of original enlightenment; hence the text below says: "Because that which is actualized enlightenment is identical to original enlightenment." It also says: "Yet in reality there is no difference of actualized enlightenment... up to being equally identical to the one enlightenment." Branch-and-twig non-enlightenment is not separate from fundamental non-enlightenment; hence the text below says: "One should know that avidyā can produce all defiled dharmas, because all defiled dharmas are marks of non-enlightenment." However, the two enlightenments—original and actualized—differ only as essence and function; the two non-enlightenments—fundamental and branch-and-twig—differ only as coarse and subtle. How could there be function separate from essence, or coarse separate from subtle? Therefore there are only two.