This is an interesting post about this quote at the end of Star Wars: Episode VI – Return of the Jedi:

Darth Vader: Luke… help me take this mask off.
Luke: But you’ll die.
Darth Vader: Nothing… can stop that now. Just for once… let me… look on you with my *own* eyes.
Anakin: Now… go, my son. Leave me.
Luke: No. You’re coming with me. I’ll not leave you here, I’ve got to save you.
Anakin: You already… have, Luke. You were right. You were right about me. Tell your sister… you were right.
Luke: Father… I won’t leave you.

(via: Pinterest)