"The future of science depends on the education of young people."

"We may be living in a world where the future is already written, but we still have the power to change it."

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

"There is no limit to the futility of human endeavor."

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