I'm currently reading The Silmarillion which is basically the history of Tolkien's Middle-Earth.  Basically, in the beginning, Iluvatar created the Ainur and the Ainur made beautiful music to Iluvatar.  But the greatest among them, Melkor, started to twist the music of Iluvatar to his own liking.  I wanted to share this quote.

"Then Iluvatar spoke, and he said: 'Mighty are the Ainur, and mightiest among them is Melkor; but that he may know, and all the Ainur, that I am Iluvatar, those things that ye have sung, I will show them forth, that ye may see what ye have done.  And thou, Melkor, shalt see that no theme may be played that hath not its uttermost source in me, nor can any alter the music in my despite.  For he that attempteth this shall prove but mine instrument in the devising of things more wonderful, which he himself hath not imagined.'