Progress is the activity of today and the assurance of tomorrow . (Emerson, American thinker )
进步是今天的活动、明天的保证。(美国思想家 家默生)
The world can be changed by man's endeavor, and that this endeavor can
lead to something new and better .No man can sever the bonds that unite
him to his society simply by averting his eyes . He must ever be receptive
and sensitive to the new ; and have sufficient courage and skill to novel
facts and to deal with them . (Franklin Roosevelt , American President )
人经过努力可以改变世界，这种努力可以使人类达到新的、更美好的境界。没有人仅凭闭目、不看社会现实就能割断自己与社会的联系。他必须敏感，随时准备接受新鲜事物；他必须有勇气与能力去面对新的事实，解决新问题。(美国总统 罗斯福. F.)
There is no royal road to science ,and only those who do not dread the
fatiguing climb of gaining its numinous summits . (Karl Marx, German revolutionary )
在科学上没有平坦的大道，只有不畏劳苦沿着其崎岖之路攀登的人，才有希望达到它光辉的顶点。( 德国革命家马克思. K .)
