中心地的空间分布遵循基于经济原则的系统模式。
We don't even know how strong we are until we are forced to bring that hidden strength forward.
模形式的算术是数论更深层次对称性的反映。
History is not the past—it is the method we have evolved of organizing our ignorance of the past.
Leadership is about creating an environment where people feel empowered to take risks and learn from failures.