ㄒㄩㄝˊxuéㄖㄢˊㄏㄡˋránhòuzhīㄅㄨˋㄗㄨˊbùzú

学然后知不足
  1. 學習以後發覺自己不夠周詳完備 畢業老師學然後知不足勉勵我們努力進取」、學然後知不足覺得自己」。

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