Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

你能做的最伟大的投资就是投资自己。

中心地的空间分布遵循基于经济原则的系统模式。

永远不要让其他人定义你的价值。只有你能决定自己的价值。

The principles of logic and mathematics are true universally simply because we never allow them to be anything else.

The only thing I can do is write. Everything else bores me.