学然后知不足

學然後知不足
xuéránhòuzhībùzú
to learn is to know one's ignorance (the Book of Rites 礼记 Lǐjì)

CEDICT

Entry Composition

1 学 xué
  1. to learn
  2. to study
  3. to imitate
  4. science
  5. -ology
2 然后 ránhòu then; after that; afterwards
3 知 zhī
  1. to know
  2. to be aware
4 不足 bùzú
  1. insufficient
  2. lacking
  3. deficiency
  4. not enough
  5. inadequate
  6. not worth
  7. cannot
  8. should not