折疑論 5.103

5.103

且誰能果知其昇降隱顯原始返終之道也（此總結三教之妙而謙辭云。且今誰敢言盡知其高低明暗。原其始生而盡其返終之道也哉）。

And who can truly know their Way of rising and falling, concealing and manifesting, tracing things to their origin and returning to their end? (This concludes by summarizing the subtlety of the Three Teachings, speaking with modest words: "And now, who would dare claim to completely know its heights and depths, brightness and darkness, tracing its initial arising and exhausting its Way of returning to the end?").