The right expectation is to believe in change from within.

正确的期望是相信内在的改变。

哈佛公开课 - 幸福课课程节选

Okay, 'a socially acceptable thing to be eating,' which of course will change from culture to culture even within a country, so that's very true.

好的 "社会认可的可食用的东西",当然这是因文化而异的,即使在一个国家里也是不同的,这种情况是很常见的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选