数学中最令人兴奋的时刻是当你发现两个看似不相关的领域有着深刻的联系。

The price of freedom is eternal vigilance.

The general will is always right， but the judgment which guides it is not always enlightened.

Diplomacy is about building bridges between different countries and cultures, promoting mutual understanding and cooperation.

最好的投资是投资自己。