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Computer science is no more about computers than astronomy is about telescopes.

Edsger Dijkstra

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Edsger Dijkstra
Age: 72 †
Born: 1930
Born: May 11
Died: 2002
Died: August 5
Computer Scientist
Engineer
Mathematician
Physicist
Scientist
University Teacher
R'dam
Edsger Dijkstra
Edsger Wybe Dijkstra
Dijkstra
EWD
E.W. Dijkstra
Programming
Computation
Computer
Microscopes
Technology
Telescopes
Science
Hardware
Astronomy
Computers
Classroom
Favourite
Cobol

More quotes by Edsger Dijkstra

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We must be very careful when we give advice to younger people sometimes they follow it!
Edsger Dijkstra
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Production speed is severely slowed down if one works with half-time people who have other obligations as well. This is at least a factor of four probably it is worse.
Edsger Dijkstra
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If there is one 'scientific' discovery I am proud of, it is the discovery of the habit of writing without publication in mind.
Edsger Dijkstra
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We shall do a much better programming job, provided that we approach the task with a full appreciation of its tremendous difficulty, provided that we stick to modest and elegant programming languages, provided that we respect the intrinsic limitations of the human mind and approach the task as Very Humble Programmers.
Edsger Dijkstra
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How do we convince people that in programming simplicity and clarity - in short: what mathematicians call elegance - are not a dispensable luxury, but a crucial matter that decides between success and failure?
Edsger Dijkstra
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It is not the task of the University to offer what society asks for, but to give what society needs.
Edsger Dijkstra
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Progress is possible only if we train ourselves to think about programs without thinking of them as pieces of executable code.
Edsger Dijkstra
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I mean, 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.
Edsger Dijkstra
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Mentally mutilated potential programmers beyond hope of regeneration.
Edsger Dijkstra
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Program testing can be used to show the presence of bugs, but never to show their absence!
Edsger Dijkstra
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The problems of the real world are primarily those you are left with when you refuse to apply their effective solutions.
Edsger Dijkstra
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It is a mistake to think that programmers wares are programs. Programmers have to produce trustworthy solutions and present it in the form of cogent arguments. Programs source code is just the accompanying material to which these arguments are to be applied to.
Edsger Dijkstra
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... as a slow-witted human being I have a very small head and I had better learn to live with it and to respect my limitations and give them full credit, rather than to try to ignore them, for the latter vain effort will be punished by failure.
Edsger Dijkstra
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It used to be the program's purpose to instruct our computers it became the computer's purpose to execute our programs.
Edsger Dijkstra
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John von Neumann draws attention to what seemed to him a contrast. He remarked that for simple mechanisms, it is often easier to describe how they work than what they do, while for more complicated mechanisms, it is usually the other way around.
Edsger Dijkstra
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Industry suffers from the managerial dogma that for the sake of stability and continuity, the company should be independent of the competence of individual employees.
Edsger Dijkstra
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Elegance is not a dispensable luxury but a factor that decides between success and failure.
Edsger Dijkstra
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A most important, but also most elusive, aspect of any tool is its influence on the habits of those who train themselves in its use. If the tool is a programming language this influence is, whether we like it or not, an influence on our thinking habits.... A programming language is a tool that has profound influence on our thinking habits.
Edsger Dijkstra
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The use of anthropomorphic terminology forces you linguistically to adopt an operational view. And it makes it practically impossible to argue about programs independently of their being executed.
Edsger Dijkstra
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In their capacity as a tool, computers will be but a ripple on the surface of our culture. In their capacity as intellectual challenge, they are without precedent in the cultural history of mankind.
Edsger Dijkstra