Innovation in science often comes from looking at old problems in new ways.
重要的是不要停止提问。好奇心有其存在的理由。
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.
能够激发学生对一件善行或一首好诗的感受的教师，比那些用一排排自然物体填满我们记忆的人成就更大。
We live in the best of all possible worlds because it was chosen from all possible worlds.
