I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home.

Influenced by him, and probably even more so by my brother Theodore (a year older than me), I soon became interested in biology and developed a respect for the importance of science and the scientific method.

There are lots of people way more talented than me - but I work more, and I wanted it more. I never waited on anyone else.

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

I want just to be happy and peaceful. And that's not always the case when you're married.

We take the hamburger business more seriously than anyone else.