The ones that are beautiful for framing are the ones that failed, so you can see all the coupons.

那些用来陈列的债券,其实都是违约的,因此你们才能看到息票

耶鲁公开课 - 金融市场课程节选

If you are not allowed to see other pieces of nature, it's a profound encounter and so beautiful.

但当你看不到其他的生物时，这种际遇就是那么深刻而美妙。

普林斯顿公开课 - 人性课程节选