I was a close observer of the developments in molecular biology.
I found a discarded textbook on calculus in a wastebasket and read it from cover to cover.
I have had many opportunities to visit universities all over the world in the past 50 years.
Like many other Laureates, I have benefit immeasurably from the love and support of my wife and children.
On my return to Pittsburgh, I resolved to go back to the fundamental problems of electronic structure that I had contemplated abstractly many years earlier.
Our children were mostly brought up and educated in the Churchill suburb east of Pittsburgh. Each summer, we took them back to England for an extended period.
From an early age I was told that I was expected to do more than continue to run a small business. Education was important and seen as a way of moving forward.
I am delighted to have had students, friends and colleagues in so many nations and to have learned so much of what I know from them. This Nobel Award honours them all.
I had changed from being a mathematician to a practicing scientist. I was increasingly embarassed that I could no longer follow some of the more modern branches of pure mathematics.
Life with a scientist who is often changing jobs and is frequently away at meetings and on lecture tours is not easy. Without a secure home base, I could not have made much progress.