"I would rather be ignorant and learn, than be learned and not know."

"The only constant in life is change."

"The atomic bomb is a testament to the power of human intellect, but it is also a warning about the dangers of human folly."

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

"I believe that science is the key to understanding the universe, and to solving the problems of humanity."