So make sure you understand what is the worst that can happen to your eyes and you can live with the worst."

VOA: standard.2010.03.03

Harmony is indeed invisible in sense Number 1, you cannot see it with your eyes, but for all that, it can be destroyed.

和声用无形的第一种解读方式理解，确实是无形的，你看不见它，但是它可以毁灭。

耶鲁公开课 - 死亡课程节选

So if what Socrates means by invisibility is the first notion: can't be seen with your eyes, then the argument is not any good, harmony is a pretty compelling counterexample.

所以如果苏格拉底说的无形,是第一个意思：，眼睛看不见，这个论证就不好，和声是个很有说服力的反例。

耶鲁公开课 - 死亡课程节选

Another good thing to do when you're really stuck is walk away. Take a break. Come back and look at it with fresh eyes of your own.

当你卡住的时候另外一件有益的事,就是走开休息一会儿,再回来看代码的时候你的眼睛就清醒多了。

麻省理工公开课 - 计算机科学及编程导论课程节选

you can open your eyes again, so now what happened, We ended up with two centrist candidates.

你们可以睁开眼睛了,现在发生了什么,我们有两个中间派候选人

耶鲁公开课 - 博弈论课程节选