"...The describe-project function, bound to C-h C-p, is a 7,500-word essay by Richard Stallman, Emacs' principal author, describing the purpose of the GNU Project (which he founded)... --
* http://www.ibm.com/developerworks/edu/au-dw-au-emacs7-i.html?S_TACT=105A...
The GNU Project
by Richard Stallman
originally published in the book "Open Sources"