The anarchic nature of the international system means that states must rely on self-help to ensure their survival.

The uniform， constant， and uninterrupted effort of every man to better his condition， the principle from which public and national as well as private opulence is originally derived.

I don't believe in God, but I believe in music.

自由的代价是永恒的警惕。

I always say, "If you stay ready, you don't have to get ready."