Expelled from France in 1303 after he sided with Pope Boniface VIII in a dispute with King Philip IV, John Duns Scotus advanced a theory of natural law that was much more limited in scope than that of the more famous Thomas Aquinas. Among other things, we explore his contention that property rights are based on positive law rather than natural law. Though he was extremely influential in the high middle ages, Scotus fell from favor in the early modern period as both the Protestants and the humanists rejected his position. They hated him so much, they even gave his name to the 'Dunce Cap.'