The ultimate test of any economic theory is whether it improves real-world decisions.
获得自由的唯一途径就是保持诚实。
"Language is the house of being. In its home man dwells."
检验一个人是否可信的最好方式就是先信任他们。
I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.