There is no such thing as a small word; every word carries the universe.
我不知道我是否有哲学。我只是尽力写出最好的书。
The best way to understand labor markets is to look at real-world data, not just theoretical models.
理解劳动力市场的最佳方式是观察现实数据,而不仅仅是理论模型。