" One downward cut, she saw. One quick, final strike, and she could kill him. The landing lights of a shuttle appeared in the distance, coming over the trees in her direction. She had to make a decision, now. Kill him, a voice inside her head said. It was amorphous, unidentifiable, raw. Pure vengeful emotion. So easy, she told herself. So quick. She recoiled from it. From the dark side. "

― Alan Dean Foster , The Force Awakens (Star Wars: Novelizations, #7)