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

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.

You learn from a conglomeration of the incredible past - whatever experience gotten in any way whatsoever.

I've danced one time in my life. It was the most mortifying experience I ever had.

The experience of life consists of the experience which the spirit has of itself in matter and as matter, in mind and as mind, in emotion, as emotion, etc.

My best film composing experience was with Elia Kazan.

Education is a private matter between the person and the world of knowledge and experience, and has little to do with school or college.

A novel should be an experience and convey an emotional truth rather than arguments.

By experience we find out a short way by a long wandering.

The experience of democracy is like the experience of life itself-always changing, infinite in its variety, sometimes turbulent and all the more valuable for having been tested by adversity.

Learning teacheth more in one year than experience in twenty.

Well, the hardest thing to do, as we know from our own experience on 9/11 is protect everything all the time.

The most important training, though, is to experience life as a writer, questioning everything, inventing multiple explanations for everything. If you do that, all the other things will come; if you don't, there's no hope for you.

When I reached adulthood, even now, I could afford to belong to a country club. But I could never belong to a private club because of my experience as a child, because it would isolate me from the whole of humanity.

No one I know of has ever had this experience-where you had to sit and wait and wait for a DNA test to come back just so you can write the last page of the book.

If you live long enough, you'll experience everything.

Actually I'd had a certain amount of experience in Europe in the inter-war period, as a banker, and I was also a member of the Board of Directors of the International Chamber of Commerce.

In the case of my book, I don't think it's really the coming-out gay novel that everyone really needed, even though it was received as such. The boy is too creepy, he betrays his teacher, the only adult man with whom he's enjoyed a sexual experience, etc.

Well, I go to the theater today, and its curtain - there is no curtain in this play; the lights go down and go up - and we start. And I live this character for two hours. There are only two of us in the play. And It's a complete experience.

Our job as writers and thinkers in the time is how to bring about the occasions that let people have that first-person experience - or the metaphoric experience that allows them to see human continuity as opposed to total threat, total willingness to do violence.