“Science is what we understand well enough to explain to a computer; art is everything else.”

“The best programs are written so that computing machines can perform them quickly and so that human beings can understand them clearly. A programmer is ideally an essayist who works with traditional aesthetic and literary forms as well as mathematical concepts, to communicate the way that an algorithm works and to convince a reader that the results will be correct.”

“Beware of bugs in the above code; I have only proved it correct, not tried it.”

“An algorithm must be seen to be believed.”

“Nobody gets everything in this life. You decide your priorities and you make your choices. I'd decided long ago that any cake I had would be eaten.”

“What advice I would give to anybody about anything. Life is a slow-motion avalanche, and none of us are steering." (When asked in an interview about what question he's tired of being asked.)”

“A lady doctor in the foreground, black horn-rims and white lab coat, suddenly cried, “You people ought to be ashamed of yourselves! Do you realize what you're doing to the reality concepts we're trying to instill in these people? How do you expect them to differentiate between illusion and reality when you do something like this?””