The economic approach to human behavior is not a substitute for other approaches; it is a complement.
對(duì)人類行為的經(jīng)濟(jì)學(xué)方法并非其他方法的替代品，而是一種補(bǔ)充。
The best way to be successful is to be persistent.
在我的一生中，大自然的新景象讓我像孩子一樣歡欣鼓舞。
我很害羞，信不信由你。
The essence of mathematics lies in its freedom.
Policy debates should be grounded in rigorous empirical analysis.