He wants to live on through something - and in his case, his masterpiece is his son. All of us want that, and it gets more poignant as we get more anonymous in this world.
Arthur MillerLet either of you breathe a word, or the edge of a word, about the other things, and I will come to you in the black of some terrible night and I will bring a pointy reckoning that will shudder you. And you know I can do it; I saw Indians smash my dear parents' heads on the pillow next to mine, and I have seen some reddish work done at night, and I can make you wish you had never seen the sun go down! - Abigail
Arthur Miller