统一自然界所有力的挑战是几十年来推动理论物理学发展的动力之一。
A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us.
Diplomacy is not a zero-sum game, but the art of finding common interests.