文化相似性和差异的解释必须在生活的物质条件中寻找。

适应是理解思想和行为的关键。

When you're depressed, It always helps to lean your head on your arm. Arms like to feel useful.

In market design, simplicity often leads to better outcomes.

天下没有不能教化的人，就害怕不诚心；天下没有不能干成的事，就怕立志不坚定。