妙法蓮華經玄義 2.198

2.198

諸諦不可說者，「諸法從本來，常自寂滅相」，那得諸諦紛紜相礙？一諦尚無，諸諦安有？一一皆不可說，可說為麁，不可說為妙。不可說亦不可說是妙，是妙亦妙，言語道斷故。若通作不可說者，生生不可說，乃至不生不生不可說。前不可說為麁，不生不生不可說為妙。若麁異妙，相待不融；麁妙不二，即絕待妙也（云云）。

As for all truths being ineffable: "All phenomena from their very origin / are always of the characteristic of quiet extinction." How could multiple truths conflict and obstruct one another in confusion? When even a single truth does not exist, how could multiple truths exist? Each and every one is ineffable. The effable is crude; the ineffable is subtle. The ineffable's also being ineffable is subtle; that this subtle is also subtle is because the path of words is cut off. If one interprets the ineffable generally: from the arising of arising being ineffable, down to non-arising and non-arising being ineffable. The former ineffable is crude, and non-arising and non-arising being ineffable is subtle. If the crude is different from the subtle, they are relative and not merged; when crude and subtle are non-dual, that is the subtly transcendent (and so forth).