The truth is, the past is all we have. We can't change it, but we can learn from it.

最好的书是让你感到活着的书。

States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.

可持续性不仅仅是一种趋势，更是我们共同的责任。

"Collaboration is the key to unlocking the mysteries of the universe."

Freedom is not the power to do what we want， but the right to do what we ought.