"I read the lines quietly, mostly to myself. "'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 nodded, again to myself. "I know exactly what she means. And I know who I can't live without.""
January 1, 1970
https://en.wikiquote.org/wiki/Eclipse_(novel)