International politics is a brutal and unforgiving arena, where states constantly strive to maximize their power and security.

解释：没有不犯错误的完人，只要能及时改正自己的错误，就是最好的了。

We should weep for men at their birth， not at their death.

我不需要说什么，我的歌说明了一切。

我想我只有一个选择：要么忙着生存，要么忙着死。