1. Do not , for one repulse , give up thepurpose 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.)
2. Dont part with your illusions .Whenthey 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)
3. I want to bring out the secrets ofnature and apply them for the happiness of man . I dont know of any betterservice 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.)
4. Ideal is the beacon. Without ideal,there is no secure direction ; without direction , there is no life .(LeoTolstoy , 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 .)
5. If winter comes , can spring be farbehind ?( P. B. Shelley , British poet )
冬天来了，春天还会远吗?(
