He found/achieved 'immortality' through his films.
She believed in the 'immortality' of the soul.
(..) Until the time is right, disappear we will. Master Kenobi, wait a moment. In your solitude on Tatooine, training I have for you. Training? An old friend has learned the path to immortality. One who has returned from the netherworld of the Force. Your old master. Qui-Gon? (..)2005 Star Wars: Episode III - Revenge of the Sith