States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.
Sustainability is not an option, it's a necessity.
There are many Beths in the world, shy and quiet, sitting in corners till needed, and living for others so cheerfully that no one sees the sacrifices till the little cricket on the hearth stops chirping, and the sweet, sunshiny presence vanishes, leaving silence and shadow behind.
世界上最有价值的资源不再是石油，而是数据。
The heart's memory eliminates the bad and magnifies the good.