Nature tends to produce constancy in all her works, but she does not always succeed.

"La literatura es una forma de resistencia, de lucha contra la injusticia y la opresión."

States are rational actors that seek to maximize their power and security in an anarchic international system.

The task of a diplomat is to pursue the maximum interests for their country while avoiding unnecessary conflicts and frictions.

如果你因失去了太阳而流泪，那么你也将失去群星了。

The journey of science is not just about the destination, but the path we take to get there.