And then, Lady Chadwick - he was knighted by that time - Lady Chadwick asked me about General Groves. Now you know General Groves was not very popular. My few meetings with him, which I had mentioned, did not give me a terribly high opinion about him and so I made some not terribly complimentary remarks. At that point something happened to James Chadwick. In physical chemistry we would call it a phase transition. He suddenly became a talkative person and he spoke and he spoke and he praised General Groves; I was wrong in not giving him more credit, without General Groves we never would have finished the atomic bomb, all the scientists just played with the ideas; that there were- was really work on it was due to that one man. I got in a word edg- edgewise at that point and I said- But you know, General Groves was opposed to our collaboration with the British. - Oh yes, said Chadwick- I know that. Whatever- whatever General Groves said I could believe. What for instance, Oppenheimer said, I could not. He went on and on. In the end I said- Good night, walked back to my hotel and Chadwick walked me home and as- at the entrance of my hotel I said- Good-bye, he said something that I obviously cannot ever forget. He said- Remember what I told you today. You will use it. Would have been a remarkable statement coming from anybody, but coming from the reserved Chadwick, what was he talking about? I came back from this trip, stopped in Washington where in the Pentagon we discussed something of no interest that I forgot, but the man who talked to us, after he finished, at the very end, he said- Incidentally, I wanted to tell you that what Truman said today is true. I did not know what he meant. I stayed, asked him- Oh. Truman had said that the Soviets have exploded an atomic bomb.