“I thought scientists were going to find out exactly how everything worked, and then make it work better. I fully expected that by the time I was twenty-one, some scientist, maybe my brother, would have taken a color photograph of God Almighty—and sold it to Popular Mechanics magazine. Scientific truth was going to make us so happy and comfortable. What actually happened when I was twenty-one was that we dropped scientific truth on Hiroshima.”

“Everything about this is embarrassing" she said. "D'you know how embarrassing it is to mention good and evil in a scientific laboratory? Have you any idea? One of the reasons I became a scientist was not to have to think about that kind of thing.”

“I remembered a time we were going through magazines. There was this one model who looked icy to the touch, in total control. I told you that, andyou said, “That’s what makes it a good photograph. You think you know what’s going on in her head. But the truth? No matter how good aphotograph is, you can never tell what’s going on in the person’s mind. There’s no way to get from here” (you pointed to the room) “to there” (youpointed to her head).”

“My grandfather was crying. The kind of quiet that is quiet and a secret. The kind of crying that only I noticed. I thought about him going into my mom's room when she was little and hitting my mom and holding up her report card and saying that her bad grades would never happen again. And I think now that maybe he meant my older brother. Or my sister. Or me. That he would make sure that he was the one to work in a mill. I don't know if that's good or bad. I don't know if it's better to have your kids be happy and not go to college. I don't know if it's better to be close with your daughter or make sure she has a better life than you do. I just don't know.”

“From the vantage point of my warm, comfortable spot on mother earth, I could see off into infinite space and the eternity of time. In just a few hours, I thought, some of us are going to make that leap into eternity. And I will be one of the instruments of that voyage. I may also be one of the travelers....It's going to happen sooner or later. But if today is my day-I'm going to have a cup of coffee first.”

“A scientist shouldn't be asked to judge the economic and moral value of his work. All we should ask the scientist to do is find the truth and then not keep it from anyone.”