少壯不努力,老大徒傷悲 [ㄕㄠˋ ㄓㄨㄤˋ ㄅㄨˋ ㄋㄨˇ ㄌㄧˋ , ㄌㄠˇ ㄉㄚˋ ㄊㄨˊ ㄕㄤ ㄅㄟ; shao4 zhuang4 bu4 nu3 li4 , lao3 da4 tu2 shang1 bei1] if you are lazy in your prime, you'll be sorry in your old age ◄ ►