請觀音經疏闡義鈔 2.59

2.59

From "now the middle" downward directly indicates the perfect wisdom, which is then named "like the ocean." "Listing names": although praising superior virtues, without explicitly revealing names one would not know the persons; hence seven persons are briefly set forth. "All explicitly in terms of the middle way": in terms of phenomena it would be cumbersome, but explaining the names through contemplation is sufficient to understand the general situation.