The fallen angel becomes the malignant devil. Yet even the enemy of God and man had friends and associates in his desolation; I am alone.
He uses Milton to narrate his slide from hope to harm. The second sentence twists the knife—Satan had company; he has none. Loneliness here is cosmic, not casual. Shelley gives him theological grammar to express social pain. The allusion raises his complaint beyond self-pity; it becomes a critique of human community. We hear not just rage but the ache of total exclusion.