Slavery and the relationship between Crusoe and Friday.

Crusoe considers Friday his subordinate, but he does not necessarily consider him a slave. He saved Friday's life, taught him to speak English, discouraged cannibalism, and converted him to Christianity. Friday acted as his servant because he believed he owed Crusoe a debt, and Crusoe educated him in every way he could because he saw Friday as a child. In fact, the relationship he has with Friday could be seen as that of a father and son.