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.

发明的进步使人类拥有了世纪前最大胆的想象也无法梦见的力量。

有时候你无法独自完成。

恋爱是艰苦的，不能期待它象美梦一样出来。