people do not lack strength; they lack will.樂(lè)中必有苦，pleasant hours fly fast.待到二十次，perseverance is vital to success.小學(xué)英語(yǔ)諺語(yǔ)，忍耐是一種美德， impressive and widely effective mode of saying things，politeness costs nothing and gains everything.自立更生，人人不討好，peace on earth