Star Wars: Episode V – The Empire Strikes Back (1980)
When Luke was unable to defeat Darth Vader, he was told by Darth Vader..
Darth Vader : There is no escape. Don’t make me destroy you.
Darth Vader : Luke, you do not yet realize your importance. You have only begun to discover your power. Join me, and I will complete your training. With our combined strength, we can end this destructive conflict and bring order to the galaxy.
Luke : I’ll never join you!
Darth Vader : If you only knew the power of the Dark Side. 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.
Luke : No. No. That’s not true. That’s impossible!
Darth Vader : Search your feelings, you *know* it to be true!
Luke : [anguished] No! No!