Becoming Cosette’s surrogate father is as major a turning point for Valjean’s soul as the incident with the bishop. This doesn’t come through in the stage musical at all, but they made it central in the movie, and Victor Hugo flat-out compares the two epiphanies in the novel: The bishop taught him virtue, while Cosette taught him the meaning of love. Hugo even ponders whether Valjean’s no-good-deed-goes-unpunished experience would have sent him back into bitterness if he hadn’t met her.
On Tumblr (Re-Reading Les Mis)