"The history of science is full of examples of people who thought they knew everything, and then discovered that they knew very little."

"My father used to say that the only way to learn something is to make mistakes, and then learn from them."

"It is not good to try to stop knowledge from going forward. Ignorance is never better than knowledge."

"The world is full of interesting things to do with neutrons."

"We are like children who have found a new toy. We do not know what to do with it, but we are playing with it."