Perhaps another exciting point of my career was when I finally realized that the elements should fit in the periodic table as actinide elements. The actinide concept. I remember that I was preparing a report for a visiting committee to come on the following Monday and I dictated this report to one of the women in the laboratory, a chemist, but who was also able to take shorthand, and by the way who had been a classmate of mine at UCLA, and it was while I was dictating that report that this idea really crystallized. I said, “Oh, it must be this way.” I dictated that concept, and that report — just as it was dictated on that day in July of 1944 — has been published in what is called the National Nuclear Energy Series, the Plutonium Project Record. That was certainly one of the most exciting moments of my life, when I just got this concept that this is the way the periodic table should be rearranged.