Rachel

“And you rage and scream and reach through the Force to crush the shadow who has destroyed you, but you are so far less now than what you were, you are more than half machine, you are like a painter gone blind, a composer gone deaf, you can remember where the power was but the power you can touch is only a memory, and so with all your world-destroying fury it is only droids around you that implode, and equipment, and the table on which you were strapped shatters, and in the end, you cannot touch the shadow. In the end you don't even want to. In the end, you do not even want to. In the end, the shadow is all you have left. Because the shadow understands you, the shadow forgives you, the shadow gathers you unto itself—And within your furnace heart, you burn in your own flame.”
― Matthew Stover, Star Wars: Revenge of the Sith