发现之美在于我们找到的意想不到的联系。
The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
There is no end on the path to seeking wisdom.
人生起落无常,低谷时别放弃。  
人类的创作犹如自然的创作一样,真正地说起来,值得注意的主要是动机。