One thing to do is to go back and ask, what really are the reasons for interest?

我们回过头想想,什么因素决定了利息呢

耶鲁公开课 - 金融市场课程节选

He had a diagram, which illustrated what is the ultimate cause of interest, and it helps us to think about this diagram whenever we try to understand the term structure.

费雪教授用一张图,来解释决定利息的本质因素,每当我们试图理解期限结构时,就会用到这张图

耶鲁公开课 - 金融市场课程节选