"Tom," Ma repeated, "what you gonna do?"
"What Casy done," he said.
– John Steinbeck
The Grapes of Wrath, Chapter 28. Tom Joad announces to his mother his intention to take the late Jim Casy’s place. He will fight for justice and equality for his own family and all the other migrant familes in California. He determines to lead a life of public service and action.