"The difference between genius and stupidity is that genius has its limits."

"I have reached an age when if someone tells me to wear socks, I don't have to."

"I have no special talents. I am only passionately curious."

"The Chinese don't sit on benches while eating but squat like Europeans do when they relieve themselves out in the leafy woods."

"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."