He found/achieved 'immortality' through his films.
She believed in the 'immortality' of the soul.
(..) Did you not think I would return, Bruce? Hm? I told you I was immortal. I watched... I watched you die. Oh, there are many forms of immortality. Once, I had a wife... my great love. - She was taken from me. - You were the mercenary. Bane is your child. (..)2012 The Dark Knight Rises