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.

【释义】善于传达信息的人能凭借它成就事业，不善于传达信息的人会因为它败坏事情。

释义：金钱在智者手中创造价值，在愚者手中制造枷锁。

一切东西的真实价格，即对于想要获得它的人来说真正付出的代价，是获得它所付出的辛劳和麻烦。