"Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux”, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project..."Read more »
"...The GNU Manifesto is a famous document that was distributed on the Internet in the early years of the GNU Project; it's one of the first nodes in the GNU Emacs manual, which you can read by opening the Emacs manual in an *info* buffer, as described in Select a node section:
1. Type C-h i to open an *info* buffer.
"...GNU is not in the public domain. Everyone will be permitted to modify and redistribute GNU, but no distributor will be allowed to restrict its further redistribution. That is to say, proprietary modifications will not be allowed. I want to make sure that all versions of GNU remain free..."Read more »