Wise men talk because they have something to say; fools, because they have to say something.
国家本质上是侵略性和扩张主义的,因为它们存在于一个无政府状态的国际体系中,没有更高的权威来约束它们。
译文:每个人有各自的本事,应该按能力分配工作。
Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.
预测未来的最好方式就是创造未来。
历史学家是向后看的先知。