摩訶止觀 5.242

5.242

若待無生而生心者：有此無生？無此無生？若有生可待，還是待有，何謂待無？有有相待，即是自生。若無此無生，無何所待？若秖待此無無而生心者，一切無無亦應生心。無望於有，無即是他生也。又無生雖無而有生性，待此性故而知有心。此性為已生？為未生？若已生生，即是於生，何謂為性？性若未生，未生何能生？

If mind arises in dependence on the unarisen: does this unarisen exist, or does this unarisen not exist? If there is an arisen to be depended upon, it is still depending on existence; how could it be called depending on nonexistence? Existence and existence depending on one another is self-arising. If this unarisen does not exist, what is there for it to depend on? If it simply depends on this nonexistence of nonexistence to produce mind, all nonexistence of nonexistence should also produce mind. Viewing nonexistence in relation to existence, nonexistence is other-arising. Furthermore, although the unarisen does not exist, it possesses a nature of arising, and in dependence on this nature one knows that there is mind: has this nature already arisen, or has it not yet arisen? If what has already arisen arises, it is already an arising, so how could it be called a nature? If the nature has not yet arisen, how could that which has not yet arisen produce anything?