"Never underestimate the joy of being proved wrong."

"I am not an optimist. I am a realist. I believe that we must be prepared for the worst, and hope for the best."

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

"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'"

"The most important thing is to never stop questioning."