[fallintothis]

  Physicists hope that the LHC will help answer the most fundamental questions in
  physics, questions concerning the basic laws governing the interactions and
  forces among the elementary objects, the deep structure of space and time,
  especially regarding the intersection of quantum mechanics and general
  relativity, where current theories and knowledge are unclear or break down
  altogether.

http://en.wikipedia.org/wiki/LHC#Purpose

[Xichekolas]

... or at the very least discover that what we call 'elementary objects' aren't really that elementary. It's turtles all the way down. :)