Aside from his importance to our culture, Friday is a key figure within the context of the novel. In many ways he is the most vibrant character in Robinson Crusoe, much more charismatic and colorful than his master. Indeed, Defoe at times underscores the contrast between Crusoe's and Friday's personalities, as when Friday, in his joyful reunion with his father, exhibits far more emotion toward his family than Crusoe. Whereas Crusoe never mentions missing his family or dreams about the happiness of seeing them again, Friday jumps and sings for joy when he meets his father, and this emotional display makes us see what is missing from Crusoe's stodgy heart. Friday's expression of loyalty in asking Crusoe to kill him rather than leave him is more heartfelt than anything Crusoe ever says or does. Friday's sincere questions to Crusoe about the devil, which Crusoe answers only indirectly and hesitantly, leave us wondering whether Crusoe's knowledge of Christianity is superficial and sketchy in contrast to Friday's full understanding of his own god Benamuckee. In short, Friday's exuberance and emotional directness often point out the wooden conventionality of Crusoe's personality.
Despite Friday's subjugation, however, Crusoe appreciates Friday much more than he would a mere servant. Crusoe does not seem to value intimacy with humans much, but he does say that he loves Friday, which is a remarkable disclosure. It is the only time Crusoe makes such an admission in the novel, since he never expresses love for his parents, brothers, sisters, or even his wife. The mere fact that an Englishman confesses more love for an illiterate Caribbean ex-cannibal than for his own family suggests the appeal of Friday's personality. Crusoe may bring Friday Christianity and clothing, but Friday brings Crusoe emotional warmth and a vitality of spirit that Crusoe's own European heart lacks.
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