To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it.See Richard Stallman, et al., "GNU General Public License: Version 1," (February, 1989). http://www.gnu.org/copyleft/copying-1.0.html

In fashioning the GPL, Stallman had been forced to make an additional adjustment to the informal tenets of the old Emacs Commune. Where he had once demanded that Commune members publish any and all changes, Stallman now demanded publication only in instances when programmers circulated their derivative versions in the same public manner as Stallman. In other words, programmers who simply modified Emacs for private use no longer needed to send the source-code changes back to Stallman. In what would become a rare compromise of free software doctrine, Stallman slashed the price tag for free software. Users could innovate without Stallman looking over their shoulders just so long as they didn't bar Stallman and the rest of the hacker community from future exchanges of the same program.

Looking back, Stallman says the GPL compromise was fueled by his own dissatisfaction with the Big Brother aspect of the original Emacs Commune social contract. As much as he liked peering into other hackers' systems, the knowledge that some future source-code maintainer might use that power to ill effect forced him to temper the GPL.

"It was wrong to require people to publish all changes," says Stallman. "It was wrong to require them to be sent to one privileged developer. That kind of centralization and privilege for one was not consistent with a society in which all had equal rights."

As hacks go, the GPL stands as one of Stallman's best. It created a system of communal ownership within the normally proprietary confines of copyright law. More importantly, it demonstrated the intellectual similarity between legal code and software code. Implicit within the GPL's preamble was a profound message: instead of viewing copyright law with suspicion, hackers should view it as yet another system begging to be hacked.

"The GPL developed much like any piece of free software with a large community discussing its structure, its respect or the opposite in their observation, needs for tweaking and even to compromise it mildly for greater acceptance," says Jerry Cohen, another attorney who helped Stallman with the creation of the license. "The process worked very well and GPL in its several versions has gone from widespread skeptical and at times hostile response to widespread acceptance."

In a 1986 interview with Byte magazine, Stallman summed up the GPL in colorful terms. In addition to proclaiming hacker values, Stallman said, readers should also "see it as a form of intellectual jujitsu, using the legal system that software hoarders have set up against them."See David Betz and Jon Edwards, "Richard Stallman discusses his public-domain [sic] Unix-compatible software system with BYTE editors," BYTE (July, 1996). (Reprinted on the GNU Project web site: http://www.gnu.org/gnu/byte-interview.html.) This interview offers an interesting, not to mention candid, glimpse at Stallman's political attitudes during the earliest days of the GNU Project. It is also helpful in tracing the evolution of Stallman's rhetoric. Describing the purpose of the GPL, Stallman says, "I'm trying to change the way people approach knowledge and information in general. I think that to try to own knowledge, to try to control whether people are allowed to use it, or to try to stop other people from sharing it, is sabotage." Contrast this with a statement to the author in August 2000: "I urge you not to use the term `intellectual property' in your thinking. It will lead you to misunderstand things, because that term generalizes about copyrights, patents, and trademarks. And those things are so different in their effects that it is entirely foolish to try to talk about them at once. If you hear somebody saying something about intellectual property, without quotes, then he's not thinking very clearly and you shouldn't join." Years later, Stallman would describe the GPL's creation in less hostile terms. "I was thinking about issues that were in a sense ethical and in a sense political and in a sense legal," he says. "I had to try to do what could be sustained by the legal system that we're in. In spirit the job was that of legislating the basis for a new society, but since I wasn't a government, I couldn't actually change any laws. I had to try to do this by building on top of the existing legal system, which had not been designed for anything like this."

About the time Stallman was pondering the ethical, political, and legal issues associated with free software, a California hacker named Don Hopkins mailed him a manual for the 68000 microprocessor. Hopkins, a Unix hacker and fellow science-fiction buff, had borrowed the manual from Stallman a while earlier. As a display of gratitude, Hopkins decorated the return envelope with a number of stickers obtained at a local science-fiction convention. One sticker in particular caught Stallman's eye. It read, "Copyleft (L), All Rights Reversed." Following the release of the first version of GPL, Stallman paid tribute to the sticker, nicknaming the free software license "Copyleft." Over time, the nickname and its shorthand symbol, a backwards "C," would become an official Free Software Foundation synonym for the GPL.

The German sociologist Max Weber once proposed that all great religions are built upon the "routinization" or "institutionalization" of charisma. Every successful religion, Weber argued, converts the charisma or message of the original religious leader into a social, political, and ethical apparatus more easily translatable across cultures and time.

While not religious per se, the GNU GPL certainly qualifies as an interesting example of this "routinization" process at work in the modern, decentralized world of software development. Since its unveiling, programmers and companies who have otherwise expressed little loyalty or allegiance to Stallman have willingly accepted the GPL bargain at face value. A few have even accepted the GPL as a preemptive protective mechanism for their own software programs. Even those who reject the GPL contract as too compulsory, still credit it as influential.