Well actually... The "End Poem" is a text-based message written by Julian Gough, which appears after the player travels to the End and kills the Ender Dragon, "beating" Minecraft. Upon the Ender Dragon's death, an End Portal is generated, allowing the player to travel back to the Overworld safely. Every time the portal is used, the poem is shown, but can be skipped by pressing Esc. The poem itself takes the form of a dialog between two unidentified speakers who are discussing the player's accomplishments, and lasts 9 minutes 28 seconds.
The fact that you can beat minecraft is very arguable. some say once you've slayed the ender dragon and go through the ender portal back to "minecraft earth", the game is over. Others, the Wither Boss. And like most believe, the achievements are what proves you've "beaten" minecraft. Better yet, there stands firm a theory, like no other... although you can "win in it", you cannot "win it".
What do you say? Can you beat minecraft?
"God helps them that help themselves"