肇論新疏 3.330

3.330

南喻動、北喻寂。經中云寂云動，令人服行。既二理相違，如何準的？譬之欲北而反指南。若今謂寂而反示動，何以令迷夫行人曉解耶？南北喻動靜者，南為朱明故喻動，北為玄冥故喻寂。

South illustrates movement; north illustrates quiescence. The sūtras speak of quiescence and speak of movement, causing people to undertake practice. Since the two principles contradict each other, how can there be a standard? It is like wishing to go north yet conversely pointing south. If here one speaks of quiescence yet conversely displays movement, how can confused practitioners be made to understand? As for using south and north to illustrate movement and quiescence: south is the vermilion radiance, hence illustrating movement; north is the dark obscurity, hence illustrating quiescence.