折疑論 3.205

3.205

妙明曰。子之所問。知其流而未識其源（責客曰。只知聖人之所流。不知聖人之根源也）。

Miaoming said: What you ask about knows the stream but has not recognized its source (rebuking the guest: you only know the stream of the sages, but do not know the source of the sages).