一本书是一扇门,每个读者都以不同的方式穿过它。
The mind will ever be unstable that has only prejudices to rest on.
Mathematics is the art of giving the same name to different things.
别自寻烦恼的只想比你同时代的人或是先辈们出色,试着比你自己更出色吧。
Leadership means making tough decisions with compassion and clarity.