So I should be taking Arabic because I think it's a so much better way to converge people.

我应该用阿拉伯语同他们交谈,因为我觉得那是一种更好的方法使人们聚集。

普林斯顿公开课 - 人性课程节选

First of all, negative time should not bother anybody; t=0 is when I set the clock, I measured time forward, but yesterday would be t = -1 day, right?

首先,负的时间对我们不存在任何干扰,t=0使我们设定的初始时间,我是用顺序计时,所以昨天就可以记为-1天,对吗

耶鲁公开课 - 基础物理课程节选