国际体系的结构迫使国家以某种方式行事，无论其内部特征如何。
The structure of the international system forces states to behave in certain ways, regardless of their internal characteristics.
Money is not my motivation. I’m driven by my passions.
可持续性不是一种选择，而是一种责任。
The sea has never been friendly to man. At most it has been the accomplice of human restlessness.
一个人是危险的，一个没有什么可失去的人更危险。