Les Misérables

Valjean and Javert are constructed as opposing theologies more than opposing men: Javert's absolute faith in law and category — a man who has broken it can never not be a criminal, full stop — versus the Bishop of Digne's single act of unearned grace, giving Valjean the silver candlesticks he'd just stolen and telling him he's bought his soul for God, which reroutes Valjean's entire life onto a logic of mercy that Javert's worldview has no room to process. Every subsequent test of Valjean — adopting Cosette, sparing Javert at the barricade, revealing his past to Marius at personal cost — restages the bishop's gift in a new key, while Javert's inability to file Valjean's mercy into any existing moral category is what finally breaks him.

Hugo interrupts the plot constantly — for Waterloo, for the Paris sewers, for the argot of the criminal underworld, for the history of convents — and the digressions aren't padding so much as the novel's insistence that individual moral drama can't be separated from the vast social machinery around it: poverty, policing, revolution, and infrastructure are treated as characters with as much bearing on Valjean's fate as any person he meets. Fantine's ruin — fired, forced into prostitution, her teeth and hair sold, dying before she can see her daughter safe — is the novel's starkest illustration of that machinery grinding down a woman with no protector, and Valjean's guilt over having indirectly caused her firing is what turns his rescue of Cosette into penance rather than simple charity.

The June Rebellion of 1832, on which Marius's student friends throw away their lives at the barricade, is a real historical footnote that changed nothing politically — Hugo knows this and includes it anyway, because the novel's argument isn't that the rebellion succeeded but that Enjolras and his friends' willingness to die for an idea, however locally futile, is continuous with the larger moral arc Valjean has been living out privately: both are refusals to accept the world's given terms as final.

Hugo's preface states the book's thesis outright — as long as poverty, ignorance, and the degradation of women by hunger and men by law persist, 'books like this cannot be useless.' That's why the digressions on the sewers (the city's literal underside, through which Valjean carries the wounded Marius to safety) or on convents and slang aren't ornamental: Hugo is building a total social geography in which no individual redemption, however moving, can be read apart from the systems that produced the misery in the first place.