摩訶止觀 1.117

1.117

若謂即空、即假、即中者，三種邐迤，各各有異。三語皆空者，無主故空、虛設故空、無邊故空；三種皆假者，同有名字故假；三語皆中者，中真、中機、中實，故俱中。此得別失圓（云云）。

If one speaks of immediate emptiness, immediate provisionality, and immediate middle, the three kinds proceed in gradual succession, each distinct from the other. The three expressions are all empty because of being masterless, because of being falsely posited, and because of being boundless; the three are all provisional because they equally possess names; the three expressions are all middle because they hit the mark of the true, hit the mark of the capacity, and hit the mark of the real, and thus are all middle. This grasps the distinctive but misses the perfect, and so forth.