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 shaky11 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.)