吃一塹,長一智 [ㄔ ㄧ ㄑㄧㄢˋ , ㄓㄤˇ ㄧ ㄓˋ; chi1 yi1 qian4 , zhang3 yi1 zhi4] Fall into the moat and you'll be wiser next time (idiom); One only learns from one's mistakes. ◄ ►