I started working and publishing in price theory by 1938.

The delicate and intricate pattern of competition and cooperation in the economic behavior of the hundreds of thousands of citizens of Stockholm offers a challenge to the economist that is perhaps as complex as the challenges of the physicist and the chemist.

It was in the 1960s that I began the detailed study of public regulation.

I met my wife, Margaret L. Mack, at the University of Chicago. We were married in 1936. She died in 1970.

Even before I came to Chicago, I had gotten interested in the existence of dispersion of prices under conditions which economic theory said would yield a single price.

And yet I would not freely exchange my science for those of my fellow laureates. They are forever confined in their professional discussions to the small numbers of their fellow scientists.

In 1958, I came to Chicago where I have remained.