answered Aylmer,surprised. The mind is in a sad state when sleep cannot control its ghosts and allows them to break free with their secrets.

VOA: special.2009.09.26

I've found some people really have to come to the first and second row because they claim that if they don't hear me they cannot really go to sleep.

我发现有些人必须得在第一,二排睡觉,因为他们说如果听不到我的声音,他们就无法入睡

耶鲁公开课 - 基础物理课程节选