States are inherently aggressive and expansionist because they exist in an anarchic international system where there is no higher authority to keep them in check.

Leadership is about making tough decisions today that will benefit everyone tomorrow.

The darkest nights produce the brightest stars.

【译文】所谓仁人，只要能做到自己想成功时先帮别人成功，自己想得到时先帮别人得到，就可以了。推己及人，可算实行仁的方法。