The internet is a tool that can be used for good or bad, and it's up to us to decide how we use it.
数学的研究就像空气或重力——它无处不在,你看不到它,但你知道它在那里。
那个握着你的手却说了错话的朋友,比那个远离你的朋友更珍贵。
The quality of an organization's mission determines the quality of its purpose.
就像虎的外形好画,虎的骨骼难画一样,人的外表好认,人心却难了解。