Do not, for one repulse¹, give up the purpose that you resolved to effect. (William Shakespeare, British dramatist)不要只因一次失败，就放弃你原来决心想达到的目的。(英国剧作家 莎士比亚.W.)Don't part with your illusions. When they are gone you may still exist, but you have ceased to live. (Mark Twain, American writer)不要放弃你的幻想。当幻想没有了以后，你还可以生存，但是你虽生犹死。（(美国作家 马克·吐温)I want to bring out the secrets of nature and apply them for the happiness of man. I don't know of any better service to offer for the short time we are in the world. (Thomas Edison, American inventor)我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好的贡献莫过于此了。 (美国发明家 爱迪生. T.)Ideal is the beacon². Without ideal, there is no secure direction; without direction, there is no life.( Leo Tolstoy, Russian writer)理想是指路明灯。没有理想，就没有坚定的方向；没有方向，就没有生活。(俄国作家 托尔斯泰. L.)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. P. B.)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. F. W.)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. A.)The ideals which have lighted my way, and time after time have given me new courage to face life cheerfully 19 have been kindness, beauty and truth.(Albert Einstein, American scientist)有些理想曾为我们引过道路，并不断给我新的勇气以欣然面对人生，那些理想就是--真、善、美。 (美国科学家 爱因斯坦. A.)The important thing in life is to have a great aim, and the determination to attain³ it. (Johan Wolfgang von Goethe, German Poet and dramatist)人生重要的事情就是确定一个伟大的目标，并决心实现它。(德国诗人、戏剧家 歌德. J. M.)The man with a new idea is a crank until the idea succeeds. (Mark Twain, American writer)具有新想法的人在其想法实现之前是个怪人。 (美国作家 马克·吐温)The only limit to our realization⁴ of tomorrow will be our doubts of today. (Franklin Roosevelt, American president)实现明天理想的唯一障碍是今天的疑虑。(美国总统 罗斯福. F.)When an end is lawful⁵ and obligatory⁶, the indispensable means to is are also lawful and obligatory. (Abraham Lincoln, American statesman)如果一个目的是正当而必须做的，则达到这个目的的必要手段也是正当而必须采取的。(美国政治家 林肯. A.)