If winter comes, can spring be far behind?(P. B. Shelley, British poet)

　　冬天来了，春天还会远吗？(英国诗人 雪莱)

　　If you doubt yourself, then indeed you stand on shaky ground。(Ibsen, Norwegian dramatist)

　　如果你怀疑自己，那么你的立足点确实不稳固了。(挪威剧作家 易卜生)

　　If you would go up high, then use your own legs! Do not let yourselves carried aloft; do not seat yourselves on other people's backs and heads. (F. W . Nietzsche , German Philosopher)

　　如果你想走到高处，就要使用自己的两条腿！不要让别人把你抬到高处；不要坐在别人的背上和头上。(德国哲学家 尼采)

　　It is at our mother's knee that we acquire our noblest and truest and highest, but there is seldom any money in them。(Mark Twain, American writer)

　　就是在我们母亲的膝上，我们获得了我们的最高尚、最真诚和最远大的理想，但是里面很少有任何金钱。(美国作家 马克·吐温)

　　Living without an aim is like sailing without a compass. Alexander Dumas (Davy de La Pailleterie, French Writer)

　　生活没有目标就像航海没有指南针。(法国作家 大仲马)