"Here’s me that used to give all my fight against the devil ’cause I figgered the devil was the enemy. But they’s somepin worse’n the devil got hold a the country, an’ it ain’t gonna let go till it’s chopped loose."
– John Steinbeck
The Grapes of Wrath, Chapter 13. When he was a preacher Jim Casy’s fight used to be with the devil. But now he acknowledges that his fight is with something worse than the devil – the evil of the corruption of society. This is the beginning of Casy’s rebellion against the capitalist system that is inflicting so much harm and suffering on people.