Mace Windu: [has Palpatine subdued] I'm going to put an end to this, once and for all!
Anakin Skywalker: You can't. He must stand trial.
Mace Windu: He has control of the senate and all the courts. He is too dangerous to be left alive!
Supreme Chancellor: [exhausted and disfigured] But, I'm too weak. Don't kill me.
Anakin Skywalker: That's not the Jedi way. He must live.
[Windu ignores Anakin, still intending to kill Palpatine]
Anakin Skywalker: I need him!
[Windu raises his lightsaber]
Anakin Skywalker: NO!
Supreme Chancellor: [Anakin draws his own lightsaber, cutting off Windu's arm, then Palpatine electricutes Windu] Power, unlimited power!