The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

我扮演的每个角色都是我的一部分，我把一部分自己献给每个角色。

We need to find ways to make energy storage more efficient and sustainable.

如果人们不相信数学是简单的，那只是因为他们没有意识到生活有多么复杂。