统治者的首要职责是保护社会免受其他独立社会的暴力和侵略，只有通过军事力量才能实现这一职责。
The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.
The fact is that women have more freedom and opportunity in America today than ever before.
Innovation is at the heart of what we do. It's how we meet the world's growing energy needs while reducing our environmental footprint.
失去某人，最糟糕的莫过于，他近在身旁，却犹如远在天边。
我认为你永远不能停止学习。总有新的东西等待发现。