你绝对必须知道的唯一东西是图书馆的位置。
The only thing that you absolutely have to know is the location of the library.
The greatest glory in living lies not in never falling, but in rising every time we fall.
The greatest power is the ability to control your own emotions and desires.
数学的本质在于它的自由。
跨行业合作是解决世界最紧迫问题的关键。