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In page Martin Eden:

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Social class, seen from Eden's point of view, is a very important theme in the novel. Eden is a sailor from a working-class background who feels uncomfortable but inspired when he first meets the bourgeois Morse family. As he improves himself, he finds himself increasingly distanced from his working-class background and surroundings, becoming repelled by Lizzie's hands. Eventually, when Eden finds that his education has far surpassed that of the bourgeoisie he looked up to, he feels more isolated than ever. Paul Berman comments that Eden cannot reconcile his present "civilized and clean" self with the "fistfighting barbarian" of the past, and that this inability causes his descent into a delirious ambivalence.[1]