Along the Lines of Wuthering Heights

"I cannot express it; but surely you and everybody have a notion that there is or should be an existence of yours beyond you.  What were the use of my creation, if I were entirely contained here?  My great miseries have been Heathcliff's miseries, and I watched and felt each from the beginning: my great though in living is himself.  If all else perished, and he remained, I should still continue to be; and if all else remained, and he were annihilated, the universe would turn to a mighty stranger: I should not seem a part of it. ..... Nelly, I am Heathcliff!  He's always, always in my mind: not as a pleasure, any more than I am always a pleasure to myself, but as my own being.  So don't talk of our separation again: it is impracticable."