"I'm not a deep thinker. I'm a practical thinker."

"I don't know anything, but I do know that everything is interesting if you look at it deeply enough."

"The principle of science, the definition, almost, is the following: The test of all knowledge is experiment. Experiment is the sole judge of scientific truth."

"If you're going to be a scientist, you don't need to be a genius. You just need to be able to work hard and be curious."

"The first principle of science is that you must not fool yourself and you are the easiest person to fool."