What is the theme of As I Lay Dying?

Alienation and loneliness make up the major theme. Faulkner's use of multiple narrators underscores one of his primary themes: every character is essentially isolated from the others. Moreover, the characters in the novel do not communicate effectively with one another. Although the reader is privy to the characters' thoughts and emotional responses, none of the characters adequately express their dilemmas or desires to others. Outside of Darl, who knows Addie's and Dewey Dell's secrets through intuition, the characters can only guess at the motivations, beliefs, and feelings of others. When these guesses turn out to be wrong, misunderstandings ensue.