 Stallman also published the GNU Manifesto in 1985 to outline the GNU Project's purpose and explain the importance of free software.Another probable inspiration for the GNU project and its manifesto was a disagreement between Stallman and Symbolics, Inc. over MIT's access to updates Symbolics had made to its Lisp machine, which was based on MIT code.Soon after the launch, he used the existing term "free software" and founded the Free Software Foundation to promote the concept.