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 only thing that is certain is uncertainty."

The only thing you absolutely have to know is the location of the library.

没有一个社会能够真正繁荣和幸福，其中大多数成员都贫困和痛苦。

The purpose of literature is to turn blood into ink.

 对于每一个出现的表象，我们应该提出相等的表象。