Language fails to capture reality
Addie says words are just shapes people use to cover up the gap between themselves and experience. Darl narrates beautifully and still can't communicate what he knows. The novel's fragmented structure makes the same point: no single voice gets it right.
Selfishness disguised as duty
Anse frames everything as sacrifice while doing almost nothing himself. Every family member uses the burial trip to pursue a personal goal. Faulkner shows how easily people dress self-interest in the language of obligation.
Death and the body
The novel keeps the physical reality of death front and center. The coffin smells. Buzzards circle. The body decays. Faulkner refuses to let death be abstract or dignified, and that refusal forces characters and readers to confront what death actually is.
Family as trap
The Bundrens are bound to each other by blood and obligation, but those bonds produce resentment as often as love. Addie felt trapped by her marriage. Darl is destroyed by his family. Dewey Dell gets no help from anyone around her.
Endurance without meaning
The family keeps going through flood, fire, and injury. They finish the journey. But finishing doesn't fix anything. Anse gets new teeth and a new wife. The endurance is real, but Faulkner doesn't reward it with resolution or redemption.