每一个数学定理都是一个等待被讲述的故事，一个等待被解开的谜团。

Only two things in this world so that our souls are deeply shocked First, our brilliant stars overhead, First,our hearts loft y moral laws.

The market is an example of a spontaneous order: a system which is the product of human action but not of human design.

教育的第一步是了解孩子。