"The most important thing is to never stop questioning. Curiosity has its own reason for existence."

"I don't believe in God, but I'm not an atheist. I'm an agnostic. I don't know if there's a God or not, and I don't think anyone else does either."

"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

"The best way to predict the future is to create it."

"The greatest danger in life is not to take the adventure."