摩訶止觀 9.140

9.140

若觀未悟，重起慈悲。此理寂靜而眾生起迷，無明戲論翳如來藏，稠煩惱林，是故起悲，拔根本重苦。又無明即法性，煩惱即菩提。欲令眾生即事而真、法身顯現，是故起慈，與究竟樂。如是誓願，清淨真正，上求佛道，下化眾生，不雜毒、不偏邪、無依倚、離二邊，名「發菩提心」。此心發時，豁然得悟，如快馬見鞭影，即到正路。

If contemplation does not bring awakening, one should again arouse loving-kindness and compassion: this principle is tranquil, yet sentient beings arouse delusion; avidyā and proliferation conceal the tathāgatagarbha, [forming a] dense forest of afflictions. Therefore, one arouses compassion to eradicate fundamental, heavy suffering. Furthermore, avidyā is itself dharmatā, and afflictions are themselves bodhi. Wishing to cause sentient beings to be identical with the real in the midst of phenomenal affairs and have their dharmakāya become manifest, one therefore arouses loving-kindness and bestows ultimate bliss. When such vows are pure and genuine, seeking the Buddha path above and transforming sentient beings below, unmixed with poison, unskewed and unperverted, without dependence, and departing from the two extremes, this is called 'arousing the bodhicitta'. When this mind is aroused, one awakens豁然, just as a swift horse, seeing the shadow of the whip, immediately takes the correct path.