衡量一个领导者的真正标准不是他们有多少追随者,而是他们培养了多少领导者。
To be a writer, one must have a certain arrogance, a belief that one's own voice is worth hearing.
模型的目的是足够简单以便理解和使用,但又足够复杂以捕捉系统的基本特征。