The document discusses Steinbeck's portrayal of self-preservation in The Grapes of Wrath. It analyzes how characters like Ma Joad, Tom Joad, and Jim Casy demonstrate that self-preservation must sometimes be sacrificed for the well-being of others. Ma chooses family over self, shifting Tom's priorities likewise. Though initially self-interested, Casy advocates for migrant workers until his death. The document also notes Steinbeck criticized banks for pursuing only self-preservation without regard for people's lives.