"The downside of my celebrity is that I cannot go anywhere in the world without being recognized. It is not enough for me to wear dark sunglasses and a wig. The wheelchair gives me away."
"why are we here?where do we come from?traditionally,these are questionsfor philosophy,but philosophy is dead"
"There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works."
"I believe the simplest explanation is, there is no God. No one created the universe and no one directs our fate. This leads me to a profound realization that there probably is no heaven and no afterlife either. We have this one life to appreciate the grand design of the universe and for that, I am extremely grateful."
"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."
"[In the Universe it may be that] Primitive life is very common and intelligent life is fairly rare. Some would say it has yet to occur on Earth."