艺术的意义不是固定的，它随着观众而演变。

Leadership is not about being in charge. It's about taking care of those in your charge.

始终为最坏的情况做计划。

Policy should be based on evidence, not ideology.

Successful people maintain a positive focus in life no matter what is going on around them.

最可信的实证研究通常来自设计清晰透明、假设公开可见的研究。