在精神平静中找到幸福。

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.

The key to solving complex problems is to break them down into smaller, more manageable parts.

Coal keeps America competitive in the world.

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.

名称的意义就是它的指称对象。