Yan Chi Vinci Chow (Wikimedia Commons)
Among the students who were nearing the end of their dissertation I knew well Avinash Dixit and Martin Weitzman. Avinash brought from his mathematics background (in Cambridge, England) an elegance of analysis to economic-theoretical problems that was impressive. Apart from his many original contributions, his unifying overviews on different topics have been a valuable guide for many. He used to be a bit of an Anglophile, but racial issues in England were partly responsible for his moving to the US.
Marty Weitzman was in many ways a striking character. When I first met him, the first thing I noticed about him was his accent — it sounded like a deep New York street drawl, which at first I had some difficulty in following. (I don’t know if his early years in a New York orphanage were responsible for this; Weitzman was actually the surname of his foster parents.) But soon I got used to his accent and his charming informality. At that time, he was a leftist, fresh from his formative student years in the tumultuous sixties. He was a technically sophisticated economist, but unlike many others of his ilk, he grappled with big systemic issues, which particularly attracted me. We spent several afternoons discussing those issues, but unlike many on the left he was a maverick, spurning clichés and thinking always out of the box.
Over the years, his economics became somewhat less radical. He once told me that in a recent visit to his parents’ summer cottage he discovered on a shelf his heavily-marked old copy of Hayek’s book The Road to Serfdom. In his youthful radical days, he had marked many of Hayek’s passages there with loud dismissive comments like “BS-BS-BS”. But now, he told me, he was surprised to find how some of the issues Hayek raised were important, and he felt compelled to erase those profane markings. When in the early 1990s I wrote an article about how the old idea of market socialism (using the market mechanism to achieve objectives of social justice) needs to be reformulated to take into account many of the incentive and information issues raised by Hayek, Marty was a particularly appreciative reader.
After making path-breaking contributions in the field of comparative economic systems he gradually moved to the field of environmental economics, soon becoming a leader in it, challenging some of the standard cost-benefit calculations, when we cannot ignore the small but not entirely negligible probability of catastrophic risk in the matter of climate change from greenhouse gas emissions. So, his pleading for control of those emissions became particularly urgent and influential. (I grieve personally and for the world that such a brilliant man recently took his own life.)
Two other MIT students I knew well were Stan Fischer (he was my student at the International Trade class, later taught at MIT, and held top positions at IMF, the World Bank, and at the Federal Reserve) and Robert Merton (later a Harvard Professor and a Nobel laureate). After I moved from our Harvard Square apartment to a campus apartment at MIT, both Stan and Robert also lived in the same tall apartment building.