My graduate studies were carried out at the California Institute of Technology.

When I entered graduate school I had carried out the instructions given to me by my father and had knocked on both Murray Gell-Mann's and Feynman's doors and asked them what they were currently doing. Murray wrote down the partition function for the three-dimensional Ising model and said it would be nice if I could solve it (at least that is how I remember the conversation). Feynman's answer was 'nothing'.

The scientist's inquiry into the causes of things is providing an ever more extensive understanding of nature.

My grandfather on my mother's side was a professor of mechanical engineering at the Massachusetts Institute of Technology; my other grandfather was a lawyer, and one time Speaker of the Tennessee House of Representatives.

The hardest problems of pure and applied science can only be solved by the open collaboration of the world-wide scientific community.

Scientists under all forms of government must be able to participate fully in international efforts.

My father was on the faculty in the Chemistry Department of Harvard University; my mother had one year of graduate work in physics before her marriage.