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 opening up of new markets, foreign or domestic, and the organizational development from the craft shop and factory to such concerns as U.S. Steel illustrate the same process of industrial mutation—if I may use that biological term—that incessantly revolutionizes the economic structure from within, incessantly destroying the old one, incessantly creating a new one.
对上帝的观念越强大和生动，它将越影响我们的生活和性格。
每一个个体都很重要，每一个个体都有自己的角色，每一个个体都能带来改变。
心理学的任务是绘制意识的结构图。
妈妈，你怎么那么爱笑？ / 因为妈妈生了你呀。
我不认为每个人都应该成为数学家，但我确实相信许多学生没有给数学一个真正的机会。