夜晚是条跟着你回家的黑狗。
The beauty of mathematics is that it is both precise and creative.
决策分析的本质是将复杂问题分解为更简单的组成部分,分析每个部分,然后综合结果得出结论。
Do just once what others say you can't do, and you will never pay attention to their limitations again.
The more you give, the more they take.
To write is to confront the ghosts of our past, to give them a voice, and perhaps, to set them free.
数学的研究对科学的发展就像空气或水一样。