每个人都是一个月亮，总有一个阴暗面，而他从来不会让人看见。

Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics:

Every artist is a cannibal, every poet is a thief.

如果你想要说些什么，去问男人；如果你想要做些什么，去问女人。

可持续性不是选择，而是责任。