Alan Perlis Quotes (30 Quotes)


    I think it is inevitable that people program poorly. Training will not substantially help matters. We have to learn to live with it.

    A year spent in artificial intelligence is enough to make one believe in God.

    If your computer speaks English, it was probably made in Japan.

    Is it possible that software is not like anything else, that it is meant to be discarded: that the whole point is to always see it as a soap bubble?

    We toast the Lisp programmer who pens his thoughts within nests of parentheses.


    The best book on programming for the layman is "Alice in Wonderland"; but that's because it's the best book on anything for the layman.

    It is easier to write an incorrect program than understand a correct one.

    In a 5 year period we get one superb programming language - only we can't control when the 5 year period will begin.

    Every program has two purposes: The one for which it was written and another for which it wasn't.

    Syntactic sugar causes cancer of the semicolon.

    Some programming languages manage to absorb change, but withstand progress.

    The computing field is always in need of new cliches.

    Computer Science is embarrassed by the computer.

    One man's constant is another man's variable.

    If you have a procedure with 10 parameters, you probably missed some.

    In English every word can be verbed. Would that it were so in our programming languages.

    In software systems it is often the early bird that makes the worm.

    A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.

    Simplicity does not precede complexity, but follows it.

    LISP programmers know the value of everything and the cost of nothing.

    It is easier to change the specification to fit the program than vice versa.

    If a listener nods his head when you're explaining your program, wake him up.

    It goes against the grain of modern education to teach students to program. What fun is there to making plans, acquiring discipline, organizing thoughts, devoting attention to detail, and learning to be self critical.

    Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it.

    The string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.

    You can measure a programmer's perspective by noting his attitude on the continuing vitality of FORTRAN.

    Don't have good ideas if you aren't willing to be responsible for them.

    A programming language is low level when its programs require attention to the irrelevant.

    In computing, turning the obvious into the useful is a living definition of the word "frustration".

    There are two ways to write error-free programs; only the third one works.


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