Once, there was a civilization (the Lisp Machine world) a lot like ours, but more advanced, with greater powers (like symbolic computation, automated learning, and LISP).
Then, in one tragic moment (er, decade - the 1980’s), it was destroyed.
But because of the wisdom of Jor-El (Stall-Man), because he realized that the human race had the capacity for good, he sent us his only son (editor).
His name is Kal-El (elisp). He will call himself Clark Kent (Editor MACroS), but the world will know him as… Superman (Emacs).