ㄒㄩㄝˊxuéㄖㄢˊránㄏㄡˋhòuzhīㄅㄨˋㄗㄨˊ

  1. 入門學習之後發現自己的知完備禮記·學記》:是故學然後知不足然後不足然後自反然後自強。」

to learn is to know one's ignorance (the Book of Rites 禮記[Li3 ji4])​