To do mathematics is to engage in an act of creation and discovery simultaneously.
智慧属于对永恒事物的智性理解;知识则属于对临时事物的理性理解。
The past is never dead. It's not even past.
When you are doing what you love, you don't feel the pressure.
男人害怕女人会嘲笑他们。女人害怕男人会杀了她们。