if you doubt yourself, then indeed you stand on shaky ground. 

如果你怀疑自己,那么你的立足点确实不稳固了。 
-ibsen(挪威剧作家易卜生)

ideal is the beacon. without ideal, there is no secure direction; without direction ,there is no life. 

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。 
-leo tolstory(俄国作家托尔斯泰)

don't part with your illusions, when they are gone you may still exist, but you have ceased to live. 

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。 
-mark twain(马克?吐温)

do not, for one repulse, give up the purpose that you resolved to effect. 

不要只因一次失败,就放弃你原来决心想要达到的目的。 
-willian shakespeare(莎士比亚)


a contented mind is the greatest blessing a man can enjoy in this world. 

知足是人生在世最大的幸事。 
-joseph addison(美国作家艾迪生)