The United States has no permanent enemies, no permanent friends, only permanent interests.
To solve a problem, one must first understand its nature and then find the right tools to tackle it.
要解决一个问题，首先必须理解它的本质，然后找到正确的工具来处理它。
科学中最重要的事情是不怕看起来愚蠢。
音乐是我给世界的情书。