More quotes by Stephen Hawking

"Life would be tragic if it weren't funny."
"[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."
"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)]"
"It is not clear that intelligence has any long-term survival value."
"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."