光波，无论是以太波还是其他波，在所有情况下都是时间上的周期性过程。

I cannot teach anybody anything。I can only make them think.

生命太短暂，不能活在他人的梦想里。

"Writing is easy: all you do is sit staring at a blank sheet of paper until drops of blood form on your forehead."

"We live in a world that is interconnected and interdependent, and our stories are part of that larger narrative."