The main insight learned from interdisciplinary studies is the return to specialization

There is only one social science and we are its practitioners

A Swedish physicist can not discuss his work with fifty people unless he goes abroad. A Swedish economist can get opinions and instructions in his native language from thousands upon thousands of his fellow citizens.

I attended schools in Seattle through the University of Washington, from which I was graduated in 1931. I spent the next year at Northwestern University.

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.

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

My main graduate training was received at the University of Chicago from which I received the Ph.D. in 1938.