If only you knew the power of the Dark-Side. Obi-Wan never told you what happened to your father.

Darth Vader, 1977, Star Wars Episode IV

No... I am your father.

Darth Vader, 1980, Star Wars Episode V

I find your lack of faith disturbing.

Darth Vader, 1977, Star Wars Episode IV

Luke, you can destroy the Emperor. He has foreseen this. It is your destiny. Join me, and together we can rule the galaxy as father and son.

Darth Vader, 1980, Star Wars Episode V