关系模型的力量在于其简单性和通用性。

The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence. In some ways we are, in some ways we're not. We are ruled by the forces of chance and coincidence.

获得自由的唯一途径就是保持诚实。

如果你不尝试揭示看不见的东西并理解其本质，你将无法做好领导的准备。

数学中最美丽的东西是复杂背后的简单思想。

理论的任务是描述观察之间的联系。