So my student called Bernard Sadow up and asked him about his invention and he said, "Yeah, I was thinking, why don't we have wheels on suitcases?

于是我的学生打电话给伯纳德？沙度,然后询问了他关于发明的事情，他说道，是啊，我当时在想，我们为什么不能在行李箱上安轮子呢？

耶鲁公开课 - 金融市场课程节选

He was trying to describe electrons, but the theory said there are two roots in the quadratic equation and the second root is mathematically as interesting as the first one.

他当时只是想去描述电子,但是数学理论告诉我们,二次方程有两个根,而第二个根在数学上和第一个根一样有趣

耶鲁公开课 - 基础物理课程节选