"And well you should not. The Force is my ally, Gallagher- and in my pain and suffering I have found new truths that set me far above what you could ever be."
He speaks now not in the pleasant voice of the Abbot, but of the dark-toned voice of the true Sienar, with the slight rasp caused by his ravaged lips and internal areas.
(The Dark Side theme would be playing at this point in the film)
"And I feel you misunderstand history. The truth is that the Light Side... has never succeeded. The Jedi have never created the Galaxy they want. Their struggle goes on forever and will never succeed. Whereas at times the Dark Side has created what THEY wanted, as I shall create what I want. The Jedi have been able to stop the Dark sometimes, but that is all. And they shall not stop me.
"The truth is, Gallagher, that the Light Side is not the natural way of things. The Dark is. And that is no mere rhetoric- and to prove that I give you one simple thing to think about. If the Light Side was the natural way of things... why are the Jedi needed?"