The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
在科学中,重要的不是获得新的事实,而是发现思考它们的新方法。
It's not supposed to be easy.Anyone who finds it easy is stupid.
墙上那个嘲笑你的时钟,可能是你老板的;但是朋友,时间是你自己的。