The Joads lose family members to death and cowardice as they go, and are challenged by everything from weather to the authorities to the California locals themselves. As Tom Joad puts it: "They're a-workin' away at our spirits. They're a tryin' to make us cringe an' crawl like a whipped bitch. They tryin' to break us. Why, Jesus Christ, Ma, they comes a time when the on'y way a fella can keep his decency is by takin' a sock at a cop. They're workin' on our decency." The point, though, is that decency remains intact, if somewhat battle-scarred, and this, as much as the depression and the plight of the "Okies," is a part of American history. When the California of their dreams proves to be less than edenic, Ma tells Tom: "You got to have patience. Why, Tomus people will go on livin' when all them people is gone. Why, Tom, we're the people that live. They ain't gonna wipe us out. Why, we're the peoplewe go on." It's almost as if she's talking about the very novel she inhabits, for Steinbeck's characters, more than most literary creations, do go on. They continue, now as much as ever, to illuminate and humanize an era for generations of readers who, thankfully, have no experiential point of reference for understanding the depression. The book's final, haunting image of Rose of SharonRosasharn, as they call herthe eldest Joad daughter, forcing the milk intended for her stillborn baby onto a starving stranger, is a lesson on the grandest scale. "'You got to,'" she says, simply. And so do we all.