Do not follow where the path may lead. Go instead where there is no path and leave a trail.

Words are wise men's counters, they do but reckon by them; but they are the money of fools.

Natural experiments can provide valuable insights into economic questions.

活着就是受苦，生存就是在苦难中找到一些意义。

解释：好像白色的丝一样，放到蓝色的染缸中，就成为青色；放到红色的染缸中，就成为赤色。

可持续性不是一种选择；它是我们行业未来的必需品。

人生最大的悲剧不是死亡，而是没有真正活过。