Thus theorists, without acknowledging romance, may use it for their own purposes. Robinson Crusoe’s island lent enchantment to Emile’s most practical employments, and Rousseau’s followers chose two wholly romantic figures to point their arguments against society. The negro, cut off from his own people, freed from his oppressors, is a striking and pathetic mark in the midst of his white brothers. He now becomes a type of the Natural Man, and a hero of children’s books.[91] The second witness against social institutions is that first friend of children, the shipwrecked sailor-man in his island, who still holds them by the spell of circumstance, even while he repeats the strange jargon of revolutionary doctrines.