These machines have no common sense; they have not yet learned to "think," and they do exactly as they are told, no more and no less. This fact is the hardest concept to grasp when one first tries to use a computer.

The process of preparing programs for a digital computer is especially attractive, not only because it can economically and scientifically rewarding, but also because it can be an aesthetic experience much like composing poetry or music.

Science is what we understand well enough to explain to a computer. Art is everything else we do.

I've never been a good estimator of how long things are going to take.

Always remember, however, that there’s usually a simpler and better way to do something than the first way that pops into your head.

I'm obsessively detail-oriented.

The sun comes up just about as often as it goes down, in the long run, but this doesn't make its motion random.