大方廣圓覺修多羅了義經略疏 2.140

2.140

The previous question said: "How many kinds of expedient means of teaching and transformation should be set up?" The meaning of the present answer is: "Only by the expedient means of great compassion do they manifest all kinds of forms, going along with or opposing according to the occasion, without a fixed number of kinds." Saying "purely by the expedient means of great compassion" means that although they encounter all kinds of capacities, they only employ these two to respond and transform each according to its category. As long as there is great compassion, they will surely transform universally; as long as there are expedient means, they will surely accord with the suitability of capacities, without fault or burden. Thus the Siyi Jing says: "Sentient beings move through the world yet do not know the world. Bodhisattvas move through the world and clearly comprehend the marks of the world. The world has the mark of empty space, and empty space is also markless. The bodhisattva, knowing thus, is not defiled by the world."