Darth Vader

You underestimate the power of the Dark Side.

Darth Vader: Obi-Wan never told you what happened to your father?
Luke: He told me enough. He told me you killed him!
Darth Vader: No. I am your father!

— Your thoughts betray you, Father. I feel the good in you, the conflict.
— There is no conflict.

— Search your feelings, Father. You can't do this. I feel the conflict within you. Let go of your hate.
— It is too late for me, son. The emperor will show you the true nature of the Force. He is your master now.
— Then my father is truly dead.

— Don't be too proud of this technological terror you've constructed. The ability to destroy a planet is insignificant next to the power of the Force.
— Don't try to frighten us with your sorcerer's ways, Lord Vader. Your sad devotion to that ancient religion has not helped you conjure up the stolen data tapes or given you clairvoyance enough to find the rebels' hidden fortress...
— I find your lack of faith disturbing.