Feudal SystemThe Feudal System was sustained by the rights and privileges given to the Upper Classes and in most cases enacted by laws. Everything was a source of privilege for the nobles. They had a thousand pretexts for establishing taxes on their vassals, who were generally considered "taxable and to be worked at will." Kings and councils waived the necessity of their studying, in order to be received as bachelors of universities. If a noble was made a prisoner of war, his life was saved by his nobility, and his ransom had practically to be raised by the "villains" of his domains.