"If you do something once, people will call it an accident. If you do it twice, they call it a coincidence. But do it a third time and you've just proven a natural law!"

"That's why I'm still here. I enjoy it."

"If we're going to have computers, we're going to have to have programmers."

"No computer is ever going to ask a new, reasonable question. It takes trained people to do that."

"The most important thing I've accomplished, other than building the compiler, is training young people."