„Programming languages on the whole are very much more complicated than they used to be: object orientation, inheritance, and other features are still not really being thought through from the point of view of a coherent and scientifically well-based discipline or a theory of correctness. My original postulate, which I have been pursuing as a scientist all my life, is that one uses the criteria of correctness as a means of converging on a decent programming language design—one which doesn’t set traps for its users, and ones in which the different components of the program correspond clearly to different components of its specification, so you can reason compositionally about it. [... ] The tools, including the compiler, have to be based on some theory of what it means to write a correct program.“

— C. A. R. Hoare, Oral history interview http://hdl.handle.net/11299/107362 by Philip L. Frana, 17 July 2002, Cambridge, England; Charles Babbage Institute, University of Minnesota.
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C. A. R. Hoare
informático teórico del Reino Unido 1934
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„... greatest single programming language ever designed. (About the Lisp programming language.)“

— Alan Kay computer scientist 1940
2003. Daddy, Are We There Yet? A Discussion with Alan Kay http://www.openp2p.com/pub/a/p2p/2003/04/03/alan_kay.html

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„If the users don't control the program, the program controls the users. With proprietary software, there is always some entity, the "owner" of the program, that controls the program—and through it, exercises power over its users. A nonfree program is a yoke, an instrument of unjust power.“

— Richard Stallman American software freedom activist, short story writer and computer programmer, founder of the GNU project 1953
Free Software Is Even More Important Now (September 2013) https://www.gnu.org/philosophy/free-software-even-more-important.html

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„Word and Excel and PowerPoint and other Microsoft programs have intimate — one might say promiscuous — knowledge of each others' internals. In Unix, one tries to design programs to operate not specifically with each other, but with programs as yet unthought of.“

— Doug McIlroy American computer scientist, mathematician, engineer, and programmer 1932
Doug McIlroy (2003). The Art of Unix Programming: The Elements of Operating-System Style http://www.catb.org/esr/writings/taoup/html/ch03s01.html

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„One can even conjecture that Lisp owes its survival specifically to the fact that its programs are lists, which everyone, including me, has regarded as a disadvantage.“

— John McCarthy American computer scientist and cognitive scientist 1927 - 2011
John McCarthy, " History of Lisp http://www-formal.stanford.edu/jmc/lisp/lisp.html," 12 February 1979; republished at www-formal.stanford.edu.

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„My favorite programming languages are Lisp and C. However, since around 1992 I have worked mainly on free software activism, which means I am too busy to do much programming. Around 2008 I stopped doing programming projects.“

— Richard Stallman American software freedom activist, short story writer and computer programmer, founder of the GNU project 1953
How I do my computing (2006) http://stallman.org/stallman-computing.html

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„You know, I know, all of us know that the time factor is the vital consideration — and vital is the correct meaning of the term — of our national defense program“

— George Marshall US military leader, Army Chief of Staff 1880 - 1959
Context: You know, I know, all of us know that the time factor is the vital consideration — and vital is the correct meaning of the term — of our national defense program; that we must never be caught in the same situation we found ourselves in 1917. Speech to the Army ordinance Association (11 October 1939); The Papers of George Catlett Marshall Vol 2 (1986) by the George C. Marshall Foundation http://www.marshallfoundation.org/index.html, Ch. 2 "The Time Factor"

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„Program designers have a tendency to think of the users as idiots who need to be controlled. They should rather think of their program as a servant, whose master, the user, should be able to control it. If designers and programmers think about the apparent mental qualities that their programs will have, they'll create programs that are easier and pleasanter — more humane — to deal with.“

— John McCarthy American computer scientist and cognitive scientist 1927 - 2011
" The Little Thoughts of Thinking Machines http://www-formal.stanford.edu/jmc/little.html", Psychology Today, December 1983, pp. 46–49. Reprinted in Formalizing Common Sense: Papers By John McCarthy, 1990,

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„A programming language is for thinking of programs, not for expressing programs you've already thought of.“

— Paul Graham English programmer, venture capitalist, and essayist 1964
"Hackers and Painters" http://www.paulgraham.com/hp.html, May 2003

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