"Anger, Fear, Aggression, the Dark Side of the Force are they. Easily they flow, quick to join you in a fight."
- Yoda, The Empire Strikes Back
Easier, more seductive, but not more powerful than the Light Side of the Force. Luke Skywalker almost gives into the Dark Side once or twice, especially during the final confrontation before the Emperor. It gives him a quick boost of strength that allows him to overpower Darth Vader, but he gets himself under control before destroying him.