Natural experiments can provide valuable insights into economic questions.
唯一使生活成为可能的是永久而难以忍受的不确定性;不知道接下来会发生什么。
A good ad should be like a good sermon; it must not only comfort the afflicted, but also afflict the comfortable.
To understand a culture, you must listen to its artists—they are the seismographs of societal change.