rms

Richard Stallman is a legendary hacker, a Macarthur Genius, and the founder of the free software movement.  Stallman resigned from MIT's Artificial Intelligence Laboratory in 1984 to launch the GNU operating system.  The free (freedom-respecting) GNU/Linux system, essential GNU with Linux added, is now used on tens of millions of computers.

Lawrence Lessig says "Stallman's ideals will define our future—if we are lucky. His work reminds a culture born in liberty what freedom can once again mean." He was the subject of the biography "Free as in Free: Richard Stallman's Crusade for Free Software."