在我的一生中，大自然的新景象让我像孩子一样欢欣鼓舞。

Labor economics is fundamentally about understanding people’s choices and constraints.

Every stroke of the brush carries the weight of history and the lightness of possibility.

Competition regulates the rate of profit, and profit regulates the rate of accumulation.

统一自然界基本力的追求是现代物理学中最大的挑战之一。