法華義疏 2.74

2.74

顯唯有一道更無有二，故若語若默皆住一也。又佛勅弟子常行二事：一、聖說法；二、聖默然。聖說法者，從實相觀出，說實相法也。聖默然者，說實相竟，還入實相觀也。故動靜語默皆應實相，實相即一道清淨。上說《無量義經》謂聖說法，今還入此定謂聖默然也。

To reveal that there is only the single path and no second; hence whether speaking or silent, he constantly abides in the one. Furthermore, the Buddha instructed his disciples to constantly practice two things: first, noble preaching of the Dharma; second, noble silence. 'Noble preaching of the Dharma' means emerging from the contemplation of the true aspect to preach the Dharma of the true aspect. 'Noble silence' means having finished preaching the true aspect, returning to enter the contemplation of the true aspect. Therefore, whether moving or still, speaking or silent, all accord with the true aspect, and the true aspect is the purity of the single path. Preaching the Immeasurable Meanings Sūtra above was noble preaching of the Dharma; now returning to enter this concentration is noble silence.