What is the theme in Barn Burning by William Faulkner?

THe main theme is alienation and loneliness. In "Barn Burning," Faulkner depicts a child, on the verge of moral awareness, who finds himself cut off from the larger social world of which he is growing conscious; this sense of alienation takes root, moreover, in Sarty's relation with his father, who should be the moral model and means of entry of the child into the larger world. Because of his father's criminal recklessness, Sarty finds himself, in the first part of the story, the object of an insult, and he attacks a boy who, in more ordinary circumstances, might be a school-companion or a friend. His father has taught him to regard others as the "enemy."