More quotes by Stephen Hawking

"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."
"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 hope I have helped to raise the profile of science and to show that physics is not a mystery but can be understood by ordinary people."
"I have noticed that even those who assert that everything is predestined and that we can change nothing about it still look both ways before they cross the street"
"It is not clear that intelligence has any long-term survival value."