Freedom and community are important. Gratis software is not worth such an effort, because price is usually not an ethical issue. Paying isn’t wrong, … - Richard Stallman

To have the choice between proprietary software packages, is being able to choose your master. Freedom means not having a master. And in the area of computing, freedom means not using proprietary software.

The official definition of "open source software," as published by the Open Source Initiative, is very close to our definition of free software; however, it is a little looser in some respects, and they have accepted a few licenses that we consider unacceptably restrictive of the users.

In 1971 when I joined the staff of the MIT Artificial Intelligence lab, all of us who helped develop the operating system software, we called ourselves hackers. We were not breaking any laws, at least not in doing the hacking we were paid to do. We were developing software and we were having fun. Hacking refers to the spirit of fun in which we were developing software. The hacker ethic refers to the feelings of right and wrong, to the ethical ideas this community of people had — that knowledge should be shared with other people who can benefit from it, and that important resources should be utilized rather than wasted. Back in those days computers were quite scarce, and one thing about our computer was it would execute about a third-of-a-million instructions every second, and it would do so whether there was any need to do so or not. If no one used these instructions, they would be wasted. So to have an administrator say, "well you people can use a computer and all the rest of you can't," means that if none of those officially authorized people wanted to use the machine that second, it would go to waste. For many hours every morning it would mostly go to waste. So we decided that was a shame. Anyone should be able to use it who could make use of it, rather than just throwing it away. In general we did not tolerate bureaucratic obstructionism. We felt, "this computer is here, it was bought by the public, it is here to advance human knowledge and do whatever is constructive and useful." So we felt it was better to let anyone at all use it — to learn about programming, or do any other kind of work other than commercial activity.