Attributed
- "Computer Science is no more about computers than astronomy is about telescopes."
- "The question of whether computers can think is like the question of whether submarines can swim."
- "I mean, if 10 years from now, when you are doing something quick and dirty, you suddenly visualize that I am looking over your shoulders and say to yourself: 'Dijkstra would not have liked this', well that would be enough immortality for me."
- "In the good old days physicists repeated each other's experiments, just to be sure. Today they stick to FORTRAN, so that they can share each other's programs, bugs included."
- "The prisoner falls in love with his chains."
- "Teaching BASIC should be a criminal offense."
- "Object-oriented programming is an exceptionally bad idea which could only have originated in California."
- "FORTRAN, "the infantile disorder", by now nearly 20 years old, is hopelessly inadequate for whatever computer application you have in mind today: it is now too clumsy, too risky, and too expensive to use."
- "Do only what only I can do"
Wrongly attributed
- "GOTO statement considered harmful"
See: list of people by name