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Alan Perlis

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116: You think you know when you learn, are more sure when you can write, even more when you can teach, but certain when you can program.

 
Alan Perlis

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Just as other information should be available to those who want to learn and understand, program source code is the only means for programmers to learn the art from their predecessors. It would be unthinkable for playwrights not to allow other playwrights to read their plays, but only be present at theater performances where they would be barred even from taking notes. Likewise, any good author is well read, as every child who learns to write will read hundreds of times more than it writes. Programmers, however, are expected to invent the alphabet and learn to write long novels all on their own. Programming cannot grow and learn unless the next generation of programmers have access to the knowledge and information gathered by other programmers before them.

 
Erik Naggum
 

You see, some people have a talent for programming. At ten to thirteen years old, typically, they're fascinated, and if they use a program, they want to know: “How does it do this?” But when they ask the teacher, if it's proprietary, the teacher has to say: “I'm sorry, it's a secret, we can't find out.” Which means education is forbidden. A proprietary program is the enemy of the spirit of education. It's knowledge withheld, so it should not be tolerated in a school, even though there may be plenty of people in the school who don't care about programming, don't want to learn this. Still, because it's the enemy of the spirit of education, it shouldn't be there in the school.
But if the program is free, the teacher can explain what he knows, and then give out copies of the source code, saying: “Read it and you'll understand everything.” And those who are really fascinated, they will read it! And this gives them an opportunity to start to learn how to be good programmers.
To learn to be a good programmer, you'll need to recognize that certain ways of writing code, even if they make sense to you and they are correct, they're not good because other people will have trouble understanding them. Good code is clear code that others will have an easy time working on when they need to make further changes.
How do you learn to write good clear code? You do it by reading lots of code, and writing lots of code. Well, only free software offers the chance to read the code of large programs that we really use. And then you have to write lots of code, which means you have to write changes in large programs.
How do you learn to write good code for the large programs? You have to start small, which does not mean small program, oh no! The challenges of the code for large programs don't even begin to appear in small programs. So the way you start small at writing code for large programs is by writing small changes in large programs. And only free software gives you the chance to do that.

 
Richard M. Stallman
 

How can anyone believe that you can "learn" how to feel and learn how to express it? How can anyone teach another person how to laugh and how to cry? How to be cheerful and how to be sad? Teach them what pain is, and despair, and desire, and passion? Hate and love? How can anyone waste their own and somebody else's time with that idiocy? But far worse than the morons who think they can learn these things are the people who claim they can teach them. In the end, they teach bad manners. If one of their trained poodles sits down in public, he doesn't sit, he slouches - which is supposed to mean that his behavior is "natural." He or she scratches his or her head then picks his or her nose, which is supposed to mean that he or she has no complexes and acts very spontaneously. So this is what New York talk shows look like.

 
Klaus Kinski
 

Everyone can act. Everyone can improvise. Anyone who wishes to can play in the theater and learn to become 'stage-worthy.' We learn through experience and experiencing, and no one teaches anyone anything. This is as true for the infant moving from kicking and crawling to walking as it is for the scientist with his equations. If the environment permits it, anyone can learn whatever he chooses to learn; and if the individual permits it, the environment will teach him everything it has to teach. 'Talent' or 'lack of talent' have little to do with it.

 
Viola Spolin
 

When you teach a man to hate and fear his brother, when you teach that he is a lesser man because of his color or his beliefs or the policies he pursues, when you teach that those who differ from you threaten your freedom or your job or your family, then you also learn to confront others not as fellow citizens but as enemies, to be met not with cooperation but with conquest; to be subjugated and mastered. We learn, at the last, to look at our brothers as aliens, men with whom we share a city, but not a community; men bound to us in common dwelling, but not in common effort. We learn to share only a common fear, only a common desire to retreat from each other, only a common impulse to meet disagreement with force.

 
Robert F. Kennedy
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