The right of a nation to kill a tyrant in case of necessity can never be doubted until the right of a tyrant to kill a nation has been proved.
在暴君有权杀死一个国家的权利被证明之前,一个国家在必要时杀死暴君的权利永远不会被怀疑。
译文:白云斜斜地挂在蔚蓝的天空上,独自登上高处心中一片怅然。遥想家乡像什么呢?在那杂乱山峰的深处,一片翠绿如烟。
The best way to learn mathematics is to do mathematics.