The students that, like the wild animal being prepared for its tricks in the circus called "life", expects only training as sketched above, will be severely disappointed: by his standards he will learn next to nothing.

I mentioned the non-competitive spirit explicitly, because these days, excellence is a fashionable concept. But excellence is a competitive notion, and that is not what we are heading for: we are heading for perfection.

Simplicity is prerequisite for reliability.

About the use of language: it is impossible to sharpen a pencil with a blunt axe. It is equally vain to try to do it with ten blunt axes instead.

The ability of discerning high quality unavoidably implies the ability of identifying shortcomings.

The question of whether a computer can think is no more interesting than the question of whether a submarine can swim.

Program testing can be used to show the presence of bugs, but never to show their absence!

The lurking suspicion that something could be simplified is the world's richest source of rewarding challenges.

Elegance is not a dispensable luxury but a factor that decides between success and failure.

There should be no such thing as boring mathematics.

Mathematicians are like managers - they want improvement without change.

Programming is one of the most difficult branches of applied mathematics; the poorer mathematicians had better remain pure mathematicians.

Don't compete with me: firstly, I have more experience, and secondly, I have chosen the weapons.

Teaching to unsuspecting youngsters the effective use of formal methods is one of the joys of life because it is so extremely rewarding.

Why has elegance found so little following? That is the reality of it. Elegance has the disadvantage, if that's what it is, that hard work is needed to achieve it and a good education to appreciate it.

Computer science is no more about computers than astronomy is about telescopes.

Perfecting oneself is as much unlearning as it is learning.

The students that, like the wild animal being prepared for its tricks in the circus called "life", expects only training as sketched above, will be severely disappointed: by his standards he will learn next to nothing.

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.

The traditional mathematician recognizes and appreciates mathematical elegance when he sees it. I propose to go one step further, and to consider elegance an essential ingredient of mathematics: if it is clumsy, it is not mathematics.

APL is a mistake, carried through to perfection. It is the language of the future for the programming techniques of the past: it creates a new generation of coding bums.

The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense.

Object-oriented programming is an exceptionally bad idea which could only have originated in California.

Aim for brevity while avoiding jargon.

It is practically impossible to teach good programming to students that have had a prior exposure to BASIC: as potential programmers they are mentally mutilated beyond hope of regeneration.

The competent programmer is fully aware of the limited size of his own skull. He therefore approaches his task with full humility, and avoids clever tricks like the plague.

Many mathematicians derive part of their self-esteem by feeling themselves the proud heirs of a long tradition of rational thinking; I am afraid they idealize their cultural ancestors.

The students that, like the wild animal being prepared for its tricks in the circus called 'life', expects only training as sketched above, will be severely disappointed: by his standards he will learn next to nothing.

Mathematicians are like managers they want improvement without change.

If debugging is the process of removing software bugs, then programming must be the process of putting them in.

If we wish to count lines of code, we should not regard them as lines produced but as lines spent.

I can remember the frustration of not being able to talk. I knew what I wanted to say, but I could not get the words out, so I would just scream.

What I try to do for my readers is to pass on some of the things that I found out about being thirteen after doing it for forty years.

In this watering-place I acted an heroic character, badly studied; and being a novice on such a stage, I forgot my part before a pair of lovely blue eyes.

Young people discovering their sexuality must know they walk with a strong tradition and that they are not alone. They have a right to information without being pressured.

Being a publicist is like management in a lot of ways - you're their friend, you're their mother, you're their confidante.

I mean, all alternative comedy is are comedians that have being doing it for so long, for so long, that they were relaxed enough to start becoming personal on stage.

I became hooked on the idea of being able to shoot an image and process it myself, and end up with a product.

Being a cover artist is not like being a real artist. That's just copying what someone else did.

It is too maddening. I've got to fly off, right now, to some devilish navy yard, three hours in a seasick steamer, and after being heartily sick, I'll have to speak three times, and then I'll be sick coming home. Still, who would not be sick for England?

I don't like being recognised, I have no interest in being famous at all, I just do what I do. If I could be like Captain Kirk and beam myself up and then beam myself down, I would!

I'm glad I'm not Brezhnev. Being the Russian leader in the Kremlin. You never know if someone's tape recording what you say.

Being a musician is what I do, but it's not what I am.

We're all like children. We may think we grow up, but to me, being grown up is death, stopping thinking, trying to find out things, going on learning.

We've had it very clear to the Bosnians that our obligation to equip and train their forces is completely conditional on the foreign forces being gone.

My parents were amazing people who had no business being together - and they knew it.

Teachers started recognizing me and praising me for being smart in science and that made me want to be even smarter in science!

Sure, I get the blues. But what I try to do, is apply joy to the blues, you know? I don't know if it's a technique, or just being bent that way, being raised by the folks I was raised by.

Kind thoughts are rarer than either kind words or deeds. They imply a great deal of thinking about others. This in itself is rare. But they also imply a great deal of thinking about others without the thoughts being criticisms. This is rarer still.