The United States has no permanent enemies, no permanent friends, only permanent interests.

最好的决策往往产生于数据和直觉的交汇处。

It’s not an apology if it comes with an excuse. It is not a compliment if it comes with a request.

成功不仅仅是赚钱，而是有所作为。

物理系统的对称性反映在其能级的简并性上。