Don't go into discussion section thinking, "Oh, I can't talk. I don't have any background in philosophy.

不要用课堂讨论的思维，哦，我不知道说什么，我没有哲学基础。

耶鲁公开课 - 死亡课程节选

When you don't have a theory, then you don't have a way to be rigorous.

若没有理论基础支撑,你就无法做到思维缜密

耶鲁公开课 - 金融市场课程节选