請觀音經疏闡義鈔 1.86

1.86

From "the middle way" downward marks the wisdom of the perfect. Although the three contemplations are in a single mind, manifesting its name from the supreme, it indicates the middle way. All three are called contemplation, and are also called wisdom. Speaking generally, the meanings of contemplation and wisdom are one; looking at them separately, cause and effect are divided into two.