Every program has (at least) two purposes: the one for which it was written and another for which it wasn’t.
ALAN PERLISThere is no such thing as a free variable.
More Alan Perlis Quotes
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Any noun can be verbed.
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“Toward what end, toward what end?”-but do not ask it too often lest you pass up the fun of programming for the constipation of bittersweet philosophy.
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It goes against the grain of modern education to teach children to program.
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You think you KNOW when you learn.
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A language that doesn’t affect the way you think about programming is not worth knowing.
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You can measure a programmer’s perspective by noting his attitude on the continuing vitality of FORTRAN.
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To understand a program, you must become both the machine and the program.
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Often it is the means that justify the ends: goals advance technique and technique survives even when goal structures crumble.
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We are on the verge: Today our program proved Fermat’s next-to-last theorem.
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Like seeing, movement or flow or alteration of view is more important than the static picture, no matter how lovely.
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There are two ways to write error-free programs; only the third one works.
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Some programming languages manage to absorb change, but withstand progress.
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You’ve solved the wrong problem. Work hard to improve.
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Because of its vitality, the computing field is always in desperate need of new cliches.
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Hardly any sets of 10K words can be adequately described with pictures.
ALAN PERLIS