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Controlling complexity is the essence of computer programming.
-- Brian Kernigan

There are two ways of constructing a software design; one way is to make
it so simple that there are obviously no deficiencies, and the other way
is to make it so complicated that there are no obvious deficiencies. The
first method is far more difficult.
-- C. A. R. Hoare

For complex systems, the compiler and development environment need to be
in the same language that its supporting. It's the only way to grow
code.
-- Alan Kay

The function of wisdom is to discriminate between good and evil.
-- Cicero

I think that a lot of programmers are ignoring an important point when
people talk about reducing code repetition on large projects.
Part of the idea is that large projects are intrinsically wrong. That
you should be looking at making a number of smaller projects that are
composable, even if you never end up reusing one of those smaller
projects elsewhere.
-- Dan Nugent

If Java had true garbage collection, most programs would delete
themselves upon execution.
-- Robert Sewell

Ce n’est que par les beaux sentiments qu’on parvient à la fortune !
-- Charles Baudelaire, Conseils aux jeunes littérateurs.

Many of life's failures are people who did not realize how close they
were to success when they gave up.
-- Thomas Edison

The wonderful and frustrating thing about understanding yourself is that
nobody can do it for you.
-- BetterExplained.com

This challenge, viz. the confrontation with the programming task, is so
unique that this novel experience can teach us a lot about ourselves. It
should deepen our understanding of the processes of design and creation,
it should give us better control over the task of organizing our
thoughts. If it did not do so, to my taste we should no deserve the
computer at all! It has allready taught us a few lessons, and the one I
have chosen to stress in this talk is the following. We shall do a much
better programming job, provided that we approach the task with a full
appreciation of its tremenduous difficulty, provided that we stick to
modest and elegant programming languages, provided that we respect the
intrinsec limitations of the human mind and approach the task as Very
Humble Programmers.
-- E. W. Dijkstra, The humble programmer

Workers of the world, the chains that bind you are not held in place by
a ruling class, a "superior" race, by society, the state, or a leader.
They are held in place by none other than yourself. Those who seek to
exploit are not themselves free, for they place no value in freedom. Who
is it that really employs you and commands you to pick up your daily
load? And who is it that you allow to pass judgment on the adequacy of
your toil? Who have you empowered to dangle the carrot before you and
threaten with disapproval? Who, when you wake each morning, sends you
off to what you call your work?
Is there an "I want to" behind all your "I have to," or have you been so
long forgotten to yourself that "I want" exists only as an idea in your
head? If you have disconnected from your soul's desire and are drowning
in an ocean of "have to," then rise up and overthrow your master. Begin
the journey toward emancipation. Work only in such a way that you are
truly self-employed.
-- Tim Gallwey, The inner game of work

A designer knows he has arrived at perfection not when there is no
longuer anything to add, but when there is no longuer anything to take
away.
-- Antoine de St Exupery.

For the things we have to learn before we can do them, we learn by doing
them.
-- Aristotle.

The use of COBOL cripples the mind; its teaching should therefore be
regarded as a criminal offense.
-- E.W. Dijkstra

If it looks like a duck, walks like a duck, and quacks like a duck, it's
a duck.
-- Official definition of "duck typing"

I was talking recently to a friend who teaches at MIT. His field is hot
now and every year he is inundated by applications from would-be
graduate students. "A lot of them seem smart," he said. "What I can't
tell is whether they have any kind of taste."
-- Paul Graham

If something isn’t working, you need to look back and figure out what
got you excited in the first place.
-- David Gorman (ImThere.com)

Talkers are no good doers.
-- William Shakespeare, "Henry VI"

Perpetual optimism is a force multiplier.
-- Colin Powell

We now come to the decisive step of mathematical abstraction: we forget
about what the symbols stand for. ...[The mathematician] need not be
idle; there are many operations which he may carry out with these
symbols, without ever having to look at the things they stand for.
-- Hermann Weyl, The Mathematical Way of Thinking

Acknowledging the negative doesn't mean sniveling [whining, complaining]; it
means facing the truth and then moving on.
-- George Leonard, Mastery.

Only make new mistakes.
-- Phil Dourado

When you’ve got the code all ripped apart, it’s like a car that’s all
disassembled. You’ve got all the parts tying all over your garage and
you have to replace the broken part or the car will never run. It’s not
fun until the code gets back to the baseline again.
-- Gary Kildall (inventor of CP/M, one of the first OS for the micro).

You can recognize truth by its beauty and simplicity. When you get it
right, it is obvious that it is right.
-- Richard Feynman

Life is what happens to you while you're busy making other plans.
-- John Lennon

Any sufficiently complicated C or Fortran program contains an ad hoc,
informally specified, bug-ridden, slow implementation of half of Common
Lisp.
-- Philip Greenspun (Greenspun's Tenth Rule)

C++ is like teenage sex: Everybody is talking about it all the time,
only few are really doing it.
-- unknown

It is better to be quiet and thought a fool than to open your mouth and
remove all doubt.
-- WikiHow

If Java had true garbage collection, most programs would delete
themselves upon execution.
-- Robert Sewell

The purpose of abstraction is not to be vague, but to create a new
semantic level in which one can be absolutely precise.
-- Edsger Dijkstra

The three chief virtues of a programmer are: Laziness, Impatience and
Hubris.
-- Larry Wall (Programming Perl)

Actually, the essence of boredom is to be found in the obsessive search for
novelty. Satisfaction lies in mindful repetition, the discovery of endless
richness in subtle variations on familiar themes.
-- George Leonard, Mastery.

What Paul does, and does very well, is to take ideas and concepts that
are beautiful in the abstract, and brings them down to a real world
level. That's a rare talent to find in writing these days.
-- Jeff "hemos" Bates, Director, OSDN; Co-evolver, Slashdot

Simple things should be simple. Complex things should be possible.
-- Alan Kay

Sound methodology can empower and liberate the creative mind; it cannot inflame
or inspire the drudge.
-- Frederick P. Brooks, No Sliver Bullet.

All problems in computer science can be solved by another level of
indirection.
-- Butler Lampson

It is practically impossible to teach good programming style to students
that have had prior exposure to BASIC. As potential programmers, they
are mentally mutilated beyond hope of regeneration.
-- E. W. Dijkstra

  • Gbi de fer
  • Howa!
  • On va en France
  • Non, je vais pas!
  • Pourquoi?
  • Parce ki y a pas agouti là-bas!
    -- Gbi de fer

Ce n'est que par les relations qu'on entretient entre nos différentes
connaissances qu'elles nous restent accessibles.
-- Shnuup, sur l'hypertexte (SELFHTML -> Introduction -> Definitions sur l'hypertexte)

Only bad designers blame their failings on the users.
-- unknown

What I didn't understand was that the value of some new acquisition
wasn't the difference between its retail price and what I paid for it.
It was the value I derived from it. Stuff is an extremely illiquid
asset. Unless you have some plan for selling that valuable thing you got
so cheaply, what difference does it make what it's "worth?" The only way
you're ever going to extract any value from it is to use it. And if you
don't have any immediate use for it, you probably never will.
-- Paul Graham

Its a shame that the students of our generation grew up with windows and
mice because that tainted our mindset not to think in terms of powerful
tools. Some of us are just so tainted that we will never recover.
-- Jeffrey Mark Siskind qobi@research.nj.nec.com in comp.lang.lisp

Fools! Don't they know that tears are a woman's most effective weapon?
-- Catwoman (The Batman TV Series, episode 83)

I’d rather write programs to write programs than write programs.
-- Richard Sites

It’s hard to grasp abstractions if you don’t understand what they’re
abstracting away from.
-- Nathan Weizenbaum

Code is poetry.
-- wordpress.org

Vigorous writing is concise. A sentence should contain no unnecessary
words, a paragraph no unnecessary sentences, for the same reason that a
drawing should have no unnecessary lines and a machine no unnecessary
parts. This requires not that the writer make all sentences short or
avoid all detail and treat subjects only in outline, but that every word
tell.
-- William Strunk, Jr. (The Elements of Style)

  • If you give him a penny for his thoughts, you'd get change.
  • Not the sharpest knife in the drawer.
  • A prime candidate for natural deselection.
    -- [Ideas for flamewars]

The programmer must seek both perfection of part and adequacy of
collection.
-- Alan J. Perlis

Don't worry about what anybody else is going to do. The best way to
predict the future is to invent it.
-- Alan Kay

Life moves pretty fast. If you don't stop and look around once in a
while, you could miss it.
-- Ferris Bueller

Ce n’est que par les beaux sentiments qu’on parvient à la fortune !
-- Charles Baudelaire, Conseils aux jeunes littérateurs.