The last clear definite function of man

The last clear definite function of man is one of the most powerful philosophical declarations in John Steinbeck's The Grapes of Wrath, appearing in the novel's fourteenth chapter. It articulates a vision of human nature that stands in direct opposition to the economic and social forces that have driven the Joad family and thousands like them from their land. The passage insists that humanity is defined not by consumption or accumulation but by the aching need to work, to build, and to create something beyond the single need for survival. This statement functions as the novel's moral and philosophical core, a ringing affirmation of human dignity and progress that Steinbeck uses to counter the dehumanization of the migrant experience.

Definition and Content of the Statement

The passage begins by declaring that the "last clear definite function of man" is the condition in which "muscles aching to work, minds aching to create beyond the single need" constitute what it means to be human. It describes the act of building—a wall, a house, a dam—as a transaction in which a person puts "something of Manself" into the creation and takes back "something of the wall, the house, the dam." This exchange is not merely physical; the worker gains "hard muscles from the lifting" and "the clear lines and form from conceiving." The statement then elevates this process into a universal law: "For man, unlike any other thing organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments." It concludes with a rhythmic, almost incantatory repetition: "This you may say of man—when theories change and crash, when schools, philosophies, when narrow dark alleys of thought, national, religious, economic, grow and disintegrate, man reaches, stumbles forward, painfully, mistakenly sometimes. Having stepped forward, he may slip back, but only half a step, never the full step back. This you may say and know it and know it."

Context and Placement in the Novel

The statement appears in Chapter 14, one of Steinbeck's intercalary or "general" chapters, which are designed to provide a synoptic, universal view of the migrant condition rather than advancing the specific narrative of the Joad family. This chapter is a meditation on the social and psychological changes sweeping the Western states, which Steinbeck describes as "nervous under the beginning change." The passage immediately follows a description of the "great owners" who are "striking at the immediate thing"—new taxes, labor unity—without understanding that these are results, not causes. The true causes, Steinbeck writes, are "a hunger in a stomach, multiplied a million times; a hunger in a single soul, hunger for joy and some security, multiplied a million times; muscles and mind aching to grow, to work, to create, multiplied a million times." The statement about the function of man thus serves as the philosophical answer to the crisis: the owners' repression is futile because the human drive to grow and create is an unstoppable force.

Thematic Significance and Narrative Role

The statement is the novel's most explicit articulation of Steinbeck's belief in human progress and resilience. It directly counters the despair and fragmentation that the Joads experience—the loss of their farm, the death of Grampa and Granma, the scattering of the family. By asserting that man "grows beyond his work" and that even when he slips back, it is "only half a step, never the full step back," Steinbeck provides a philosophical foundation for the hope that Ma Joad later expresses: "We're the people that live." The passage also resonates with the novel's ecological and political themes. It implies that the industrial farming system, which treats workers as interchangeable parts and the land as a commodity to be exploited, is a violation of this fundamental human function. The tractor driver who "loved the land no more than the bank loved the land" is a figure of this violation, a man reduced to a robot in an iron seat, his hands and mind goggled and muzzled. The statement thus functions as a critique of a system that separates people from the creative, productive relationship with their work and the land.

Connection to Other Key Themes and Characters

The philosophy of the statement is embodied most fully in Tom Joad's transformation. After Jim Casy's death, Tom internalizes the preacher's vision of collective action, declaring that he will be present "wherever they's a fight so hungry people can eat." This is a direct application of the principle that man must "grow beyond his work" and "emerge ahead of his accomplishments." Tom's journey from a paroled killer to a committed organizer is a narrative enactment of the statement's claim that man "reaches, stumbles forward, painfully, mistakenly sometimes." The statement also connects to the novel's title and its biblical allusions. The "grapes of wrath" are filling and growing heavy for the vintage, and the statement about the function of man provides the theological and philosophical justification for that wrath: it is the anger of a species that is being denied its essential nature. The passage is thus not merely a philosophical aside but the novel's central argument about what it means to be human in the face of oppression.