What he's saying is that "let's study the sages,the saints, " the extraordinary people,the arrowhead" so that we can understand and realize the potential in all people.

他的意思是,“让我们学习圣人，非凡的人“,这样能帮助我们了解,人类的潜能。

哈佛公开课 - 幸福课课程节选