More quotes by Stephen Hawking

"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."
"My expectations were reduced to zero when I was 21. Everything since then has been a bonus."[The Science of Second-Guessing (New York Times Magazine Interview, December 12, 2004)]"
"I think computer viruses should count as life ... I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image."
"[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."
"However difficult life may seem, there is always something you can do and succeed at."