美国没有永恒的敌人，也没有永恒的朋友，只有永恒的利益。

痛苦+反省=进步

The cloud is not a place, it's a way of doing business.

The most important tool in chemistry is not the flask or the spectrometer—it's the imagination.

The real hero is the one who knows how to live in peace, not in war.