肇論新疏 3.235

3.235

初二句，汎明一智皆虛冥也。次二句，示正智照理。四方上下名為六合。後二句，示後智達事。鏡萬下，謂萬有於方寸而無慮焉，故云常虛。此辯智玄，下明證妙。

The first two clauses broadly explain that the single wisdom is entirely empty and dark. The next two clauses show fundamental wisdom illuminating principle. The four directions, above, and below are called the six directions. The latter two clauses show subsequent wisdom reaching phenomena. From "reflecting the myriad" downward, it means that the myriad existences are in the square inch without any deluded thoughts, hence it is said "remains ever empty." This discriminates the profundity of wisdom; below clarifies the wonder of realization.