Do not , for one repulse , 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 beacon. 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 attain 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 realization 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 lawful and obligatory, 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.)