"I felt ill the other day, but all they had to do was to turn me off, and then back on again."

"When I gave a lecture in Japan, I was asked not to mention the possible re-collapse of the universe, because it might affect the stock market. However, I can reassure anyone who is nervous about their…"

"What makes human beings unique? Some say it's language or tools. Others say it's logical reasoning. They obviously haven't met many humans."

"I believe that we are alone in the universe, but I hope we are not."

"I am not afraid of death, but I'm in no hurry to die. I have so much I want to do first."