I defended my doctoral dissertation on stochastic stability of general equilibrium systems in Penn’s Applied Mathematics program in fall 1968. That year I began teaching math for economists, mathematical economics, microeconomics, and even econometrics at Rutgers College, where I remained for a couple of years before moving to Duke. At Rutgers I saw that graduate students took required courses in micro, macro, statistics, math, and econometrics, and there were electives in other fields like public finance and economic history. I didn’t know that there was any subdiscipline, or field, called the history of economic thought.

中文翻译：

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既不是经济学家也不是历史学家

1968 年秋天，我在宾夕法尼亚大学应用数学项目中完成了关于一般均衡系统随机稳定性的博士论文答辩。那一年，我开始在罗格斯学院教授经济学家数学、数理经济学、微观经济学，甚至计量经济学，并在那里呆了几年在搬到杜克大学之前。在罗格斯大学，我看到研究生选修了微观、宏观、统计学、数学和计量经济学等必修课程，还有公共财政和经济史等其他领域的选修课。我不知道有什么分支学科或领域叫做经济思想史。