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Alan Perlis Quotes - Page 1

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Any noun can be verbed.
Alan Perlis / Computer Scientist
Learning
Nouns
Programming
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Optimization hinders evolution.
Alan Perlis / Computer Scientist
Learning
Evolution
Programming
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In English every word can be verbed.
Alan Perlis / Computer Scientist
English Language
Language
Programming Languages
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There is no such thing as a free variable.
Alan Perlis / Computer Scientist
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One man's constant is another man's variable.
Alan Perlis / Computer Scientist
Men
Constant
Variables
Variable
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Syntactic sugar causes cancer of the semicolon.
Alan Perlis / Computer Scientist
Cancer
Causes
Sugar
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Computer Science is embarrassed by the computer.
Alan Perlis / Computer Scientist
Science
Computer
Computer Science
Embarrassed
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The computing field is always in need of new cliches.
Alan Perlis / Computer Scientist
Computing
Cliches
Field
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C programmers never die. They are just cast into void.
Alan Perlis / Computer Scientist
Casts
Programmers
Void
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Simplicity does not precede complexity, but follows it.
Alan Perlis / Computer Scientist
Complexity
Doe
Simple Life
Simplicity
Does
Follows
Precede
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In computing, the mean time to failure keeps getting shorter.
Alan Perlis / Computer Scientist
Computing
Mean
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In the long run, every program becomes rococo, and then rubble.
Alan Perlis / Computer Scientist
Running
Humorous
Long
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If your computer speaks English, it was probably made in Japan.
Alan Perlis / Computer Scientist
Computers
Computer
Japan
Made
Speak English
English
Speaks
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One can't proceed from the informal to the formal by formal means.
Alan Perlis / Computer Scientist
Formal
Mean
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In software systems it is often the early bird that makes the worm.
Alan Perlis / Computer Scientist
Technology
Bird
Early Bird
Software
Worms
Often
Early
Makes
Systems
Worm
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If you have a procedure with 10 parameters, you probably missed some.
Alan Perlis / Computer Scientist
Computing
Parameters
Procedures
Missed
Procedure
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In programming, as in everything else, to be in error is to be reborn.
Alan Perlis / Computer Scientist
Errors
Programming
Reborn
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LISP programmers know the value of everything and the cost of nothing.
Alan Perlis / Computer Scientist
Cost
Programmers
Nothing Know Everything
Value
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Don't have good ideas if you aren't willing to be responsible for them.
Alan Perlis / Computer Scientist
Computing
Good Ideas
Ideas
Responsible
Willing
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In man-machine symbiosis, it is man who must adjust: The machines can't.
Alan Perlis / Computer Scientist
Men
Machines
Symbiosis
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Once you understand how to write a program get someone else to write it.
Alan Perlis / Computer Scientist
Program
Writing
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A LISP programmer knows the value of everything, but the cost of nothing.
Alan Perlis / Computer Scientist
Cost
Lisp
Programmers
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It is easier to write an incorrect program than understand a correct one.
Alan Perlis / Computer Scientist
Easier
Program
Correct
Incorrect
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There are two ways to write error-free programs; only the third one works.
Alan Perlis / Computer Scientist
Errors
Two
Writing
Works
Write
Programs
Third
Ways
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To understand a program, you must become both the machine and the program.
Alan Perlis / Computer Scientist
Learning
Machines
Program
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Some programming languages manage to absorb change, but withstand progress.
Alan Perlis / Computer Scientist
Language
Manage
Programming
Progress
Absorb
Languages
Withstand
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It is easier to change the specification to fit the program than vice versa.
Alan Perlis / Computer Scientist
Change
Computer
Easier
Fit
Program
Vice Versa
Vices
Specification
Versa
Vice
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We are on the verge: Today our program proved Fermat's next-to-last theorem.
Alan Perlis / Computer Scientist
Lasts
Next
Today
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If a listener nods his head when you're explaining your program, wake him up.
Alan Perlis / Computer Scientist
Explaining
Listeners
Program
Head
Listener
Wake
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A year spent in artificial intelligence is enough to make one believe in God.
Alan Perlis / Computer Scientist
God
Science
Technology
Artificial
Artificial Intelligence
Believe
Enough
Make
Year
Spent
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We toast the Lisp programmer who pens his thoughts within nests of parentheses.
Alan Perlis / Computer Scientist
Ballpoint Pens
Nests
Parentheses
Pens
Programmer
Thoughts
Toast
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A good programming language is a conceptual universe for thinking about programming.
Alan Perlis / Computer Scientist
Learning
Language
Thinking
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Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it.
Alan Perlis / Computer Scientist
Complexity
Genius
Life And Love
Remove
Suffering
Avoid
Fools
Geniuses
Ignore
Some
Suffer
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A language that doesn't affect the way you think about programming is not worth knowing.
Alan Perlis / Computer Scientist
Learning
Knowing
Thinking
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In English every word can be verbed. Would that it were so in our programming languages.
Alan Perlis / Computer Scientist
Language
Programming
Programming Languages
Languages
Word
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A programming language is low level when its programs require attention to the irrelevant.
Alan Perlis / Computer Scientist
Attention
Irrelevant
Language
Levels
Programming
Low
Programming Language
Require
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Motto for a research laboratory: what we work on today, others will first think of tomorrow.
Alan Perlis / Computer Scientist
Research
Thinking
Today
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Every program has two purposes: The one for which it was written and another for which it wasn't.
Alan Perlis / Computer Scientist
Program
Written
Purposes
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In computing, turning the obvious into the useful is a living definition of the word "frustration".
Alan Perlis / Computer Scientist
Definitions
Frustrated
Frustration
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FORTRAN is not a flower but a weed - it is hardy, occasionally blooms, and grows in every computer.
Alan Perlis / Computer Scientist
Computer
Flower
Weed
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In computing, turning the obvious into the useful is a living definition of the word 'frustration'.
Alan Perlis / Computer Scientist
Computers
Computing
Frustration
Obvious
Useful
Turning
Definition
Word
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When a professor insists computer science is X but not Y, have compassion for his graduate students.
Alan Perlis / Computer Scientist
Compassion
Graduates
Students
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Adapting old programs to fit new machines usually means adapting new machines to behave like old ones.
Alan Perlis / Computer Scientist
Fit
Machines
Mean
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Learning French is trivial: the word for horse is cheval, and everything else follows in the same way.
Alan Perlis / Computer Scientist
Funny
Humor
Horse
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You can measure a programmer's perspective by noting his attitude on the continuing vitality of FORTRAN.
Alan Perlis / Computer Scientist
Attitude
Continuing
Perspective
Vitality
Measure
Noting
Programmer
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Every program has (at least) two purposes: the one for which it was written and another for which it wasn't.
Alan Perlis / Computer Scientist
Program
Purpose
Two
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When someone says, "I want a programming language in which I need only say what I want done," give him a lollipop.
Alan Perlis / Computer Scientist
Funny Inspirational
Giving
Needs
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Programmers are not to be measured by their ingenuity and their logic but by the completeness of their case analysis.
Alan Perlis / Computer Scientist
Analysis
Cases
Logic
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Because of its vitality, the computing field is always in desperate need of new cliches: Banality soothes our nerves.
Alan Perlis / Computer Scientist
Technology
Humorous
Needs
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It is better to have 100 functions operate on one data structure than to have 10 functions operate on 10 data structures.
Alan Perlis / Computer Scientist
Trust
Data
Function
Structure
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